Relay Control
2009
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 Relay 1 2 Electrical Box Mount 12v DC realy controls 20A 120V AC Contacts $19.95 Time Remaining: 2h 41m Buy It Now for only: $24.95 |
 40A SSR Solid State Relay + Heat Sink DC3 32V Control AC24 480V $13.55 Time Remaining: 24d 30m Buy It Now for only: $13.55 |
 2 TELEMECANIQUE XPS AK CONTROL SAFETY RELAY 24 AC DC $11.50 (3 Bids) Time Remaining: 3h 20m |
 Deltrol Control 20108 84 relay nos $12.50 Time Remaining: 26d 14h 45m Buy It Now for only: $12.50 |
 AA 25A Solid state relay SSR 80 250V control 24 380V $0.99 Time Remaining: 4h 42m |
 DON NOB A 6021 POWER SUPPLY RELAY DRIVE 60 1A CONTROL BOARD MODULE PLC 47233 $24.01 Time Remaining: 4h 57m |
 SSR 25 DA Solid State Relay For PID Temperature Controller 25A Output 24V 380V $4.56 Time Remaining: 15d 20h 55m Buy It Now for only: $4.56 |
 B W CONTROLS MAGNETEK 1500 G L1 S2 INDUCTION RELAY 120V PRIMARY 24V 56047 $9.99 (1 Bid) Time Remaining: 4h 58m |
 NEW WARRICK CONTROLS 16VMB1A0 AC DIRECT RELAY 10K 120V 11PIN OCTAL SOCKET 50289 $49.51 Time Remaining: 6h 57m |
 OPTO 22 Control Relay Mod 120D3 3 32 VDC Warranty $9.25 Time Remaining: 10d 8h 14m Buy It Now for only: $9.25 |
 General Electric CONTROL RELAY 10 Amp 115V 100A2 NOS GE $49.99 Time Remaining: 7h 58m |
 Allen Bradley Type N Control Relay w Pneumatic Time Delay 700 NT400A1 Series $45.00 (4 Bids) Time Remaining: 8h 10m |
 1pcs SOLID STATE RELAY SSR Temperature Controller DC AC SSR 25DA 25A 3 32VDC $4.99 Time Remaining: 24d 14h 21m Buy It Now for only: $4.99 |
 ALLEN BRADLEY 700 B200A22A 220V 60HZ 110V 25HZ CONTROL RELAY HEAVY DUTY 600V $12.99 Time Remaining: 8h 36m Buy It Now for only: $15.89 |
 WESTINGHOUSE C H AR440X INDUSTRIAL AC CONTROL RELAY 600V 10A AMP 54572 $9.00 Time Remaining: 9h 14m |
 To USA 110V Digital temperature controller + Sensor 2 Relay output thermostat $19.99 Time Remaining: 23d 15h 8m Buy It Now for only: $19.99 |
 WARRICK 1D1D0 LIQUID LEVEL CONTROL RELAY WITH 2860P1 COIL 115V 56119 $3.99 Time Remaining: 9h 57m |
 AA 25A Solid state relay SSR AC 80 250V control 24 380V AC $0.99 Time Remaining: 11h 12m |
 Control Solid State Relay SSR 40DA 40A 24 380V AC Module Fast Switching $5.57 Time Remaining: 24d 20h 35m Buy It Now for only: $5.57 |
 Opto 22 Opto22 PB16HC 16 Ch I O Relay PLC Switch Controller Board Assembly $14.95 Time Remaining: 13h |
 Kaleja Model 0604002 D 73553 Aldorf DC Motor Speed Control Relays LOT of 3pc $9.95 Time Remaining: 13h 10m |
 Solid State Relay SSR 25DA 25A 250V 3 32VDC for Temperature Controller $4.58 Time Remaining: 20d 2h 57m Buy It Now for only: $4.58 |
 110V AC Digital Temperature Control Controller With NTC Sensor 1100W 2 Relay $9.99 Time Remaining: 15h 17m |
 GE RR7 REMOTE CONTROL SWITCHING RELAY COIL 21 30VAC RR 7 $8.99 Time Remaining: 24d 2h 27m Buy It Now for only: $8.99 |
 NCC National Controls Corporation T1K 5 461 Solid State Timer $20.00 Time Remaining: 16h 40m Buy It Now for only: $22.50 |
 25A SOLID STATE RELAY SSR for Temperature Controller $0.99 Time Remaining: 16h 43m |
 SSR 25 DA Solid State Relay For PID Temperature Controller 25A Output 24V 380V $4.63 Time Remaining: 22d 15h 35m Buy It Now for only: $4.63 |
 AA 25A Solid state relay SSR AC 80 250V control 24 380V $0.99 Time Remaining: 16h 48m |
 5V 1 One Channel Relay Module Expansion Board For Appliance Control Arduino SCM $1.99 Time Remaining: 17h 21m |
 Allen Bradley Control Relay cat700 M310A1SNew in Factory Box $15.00 Time Remaining: 21d 12h 29m Buy It Now for only: $15.00 |
 CUTLER HAMMER BF62F BF CONTROL RELAY WESTINGHOUSE NEW IN BOX $29.99 Time Remaining: 18h 25m Buy It Now for only: $49.99 |
 5V 1 One Channel Relay Module Expansion Board For Appliance Control Arduino SCM $1.99 Time Remaining: 23h 26m |
 BASE ELECT LV 8RCL N LOCK INTER FACE 8 24V RELAYFUSED INPUTS ACCESS CONTROL $89.99 Time Remaining: 1d 6h 18m Buy It Now for only: $89.99 |
 Controller CNi1633 1 16 DIN with 2 Relay Outputs $76.00 Time Remaining: 1d 1h 35m Buy It Now for only: $84.00 |
 STRUTHERS DUNN 219BBX69P CONTROL RELAY 24V COIL 56121 $3.99 Time Remaining: 1d 2h 18m |
 3x Relay control module with Optocoupler Isolation SLA DC 12V 30A Relay Module $11.99 Time Remaining: 12d 16h 38m Buy It Now for only: $11.99 |
 3pcs SHAMROCK CONTROLS TR2D1231623 TR2D18321 THERMAL OVERLOAD RELAY NEW $20.00 Time Remaining: 1d 3h 28m |
 3pcs SIEMENS 3TH42 44 0AK6 CONTROL RELAYS NEW $20.00 Time Remaining: 1d 3h 29m |
 Digital PID Temperature Controller + 25A Solid State Relay w 6FT Sensor 20 420 $41.99 Time Remaining: 28d 4h 55m Buy It Now for only: $41.99 |
 WARRICK CONTROLS 16DMC1MO RELAY NEW $20.00 (1 Bid) Time Remaining: 1d 3h 53m |
 NEW ALLEN BRADLEY 700 HG45Z24 CONTROL RELAY 30A AMP 24V SERIES A 54651 $3.00 Time Remaining: 1d 4h 20m |
 Air Products and Control Relay MR 201 C $15.99 Time Remaining: 15d 11h 28m Buy It Now for only: $15.99 |
 1x Carlo Gavazzi SV225724 Dual Level Control Relay 24V RANGE 35 25KOHM NEW $0.99 Time Remaining: 1d 4h 22m |
 Crouzet Syrelec DUFR2 Three Phase Voltage Control Relay New $39.99 Time Remaining: 29d 6h 59m Buy It Now for only: $39.99 |
 CARLO GAVAZZI RMIA 0040115AC PLUG IN INDUSTRIAL CONTROL RELAY 4SWITCH 115V 40168 $3.00 Time Remaining: 1d 4h 40m |
 81 B Allen Bradley 700 CF310Z Contactor Control Relay $35.00 Time Remaining: 1d 5h 23m |
 RS232 Dual Relay Controller Model R25 R210 from Control Anything $32.00 Time Remaining: 26d 11h 49m Buy It Now for only: $32.00 |
 81 B Cutler Hammer D26MB Latching Relay PLC Control System Component $20.00 Time Remaining: 1d 5h 23m |
 AA 25A Solid state relay SSR AC 80 250 control 24 380 VAC $0.99 Time Remaining: 1d 5h 44m |
 Allen Bradley 700 P400A1 Control Relay NIB $49.00 Time Remaining: 5d 23h 49m Buy It Now for only: $49.00 |
 5X ALLEN BRADLEY 700 P200A1 AC CONTROL RELAY TYP P DIRECT DRIVE COIL 120V 45476 $5.12 Time Remaining: 1d 6h 1m |
 Miniature relay 28 V control voltage Box of 36 New $9.95 Time Remaining: 1d 7h 47m |
 New Digital PID Temperature Controller Control RNR 1 Alarm Relay Output TC RTD $27.99 Time Remaining: 3d 16h 38m Buy It Now for only: $27.99 |
 Square D 8501XO20XLV02 Control RELAY 120VAC 2NO $75.00 Time Remaining: 1d 8h 37m Buy It Now for only: $100.00 |
 Chromalox 1603 11030 Temperature Control Output Relay $39.00 Time Remaining: 1d 9h 5m |
 5pcs solid state relay SSR Temperature Controller DC AC SSR 25DA 25A 3 32VDC $23.99 Time Remaining: 19d 23h 55m Buy It Now for only: $23.99 |
 Remote monitor temp humidity relay control I O WebControl new hw v222 $29.00 (1 Bid) Time Remaining: 1d 10h 42m |
 Cussons P9005 Industrial Control Circuit Board Relays transformers misc $0.99 Time Remaining: 1d 10h 44m Buy It Now for only: $40.00 |
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 ALLEN BRADLEY CONTROL AC RELAY CATALOG 700 P200A1 TYPE P $9.99 Time Remaining: 1d 11h 56m |
 New Allen Bradley control relay 700 p400a1 $40.00 Time Remaining: 1d 12h 56m |
 GE RR7 LIGHTING CONTROL RELAY NEW IN BOX CHEAP SHIPPING NEW NEW NEW $29.95 Time Remaining: 28d 11h 5m Buy It Now for only: $29.95 |
 Dual PID Temperature Controller 2 Relay +K thermocouple $9.60 Time Remaining: 1d 16h 1m |
 NEW HONEYWELL RA890F 1288 6 FLAME SAFEGUARD PRIMARY CONTROL 120V 50 60 HZ $690.00 Time Remaining: 28d 15h 42m Buy It Now for only: $690.00 |
 WESTINGHOUSE CONTROL RELAY 275A18IGO2 10AMP $5.99 Time Remaining: 2d 5h 2m |
 AA 25A Solid state relay SSR AC 80 250V control 24 380VAC $0.99 Time Remaining: 2d 13h 44m |
 1CH 12V DC REMOTE CONTROL RELAY SWITCH 12VDC OUTPUT L $16.50 Time Remaining: 16d 14h 20m Buy It Now for only: $16.50 |
 Andover Controls Seris 840 Infinity Controller Relays Control Transformer $99.00 Time Remaining: 2d 13h 47m |
 Square D Class 8501 control relay $20.00 Time Remaining: 2d 14h 18m Buy It Now for only: $24.99 |
 220VAC 240VAC 30A DPDT Power Relay Motor Control $5.95 Time Remaining: 18d 18h 37m Buy It Now for only: $5.95 |
 ACF Relay Protection Controls 115V 60HZ $14.99 Time Remaining: 2d 17h 11m |
 potter Brumfield control R10 E6X2 V700 $0.99 Time Remaining: 2d 17h 11m |
 Air Products Controls APC PAM1 Relay Module 10A 115VAC New $10.00 Time Remaining: 29d 7h 35m Buy It Now for only: $10.00 |
 AC Control Solid State Relay 120 VAC 10 Amp OPTO 22 NEW in box with terminal HW $9.99 Time Remaining: 2d 17h 14m |
 5V 1 One Channel Relay Module Expansion Board For Appliance Control Arduino SCM $1.98 Time Remaining: 2d 17h 20m |
 WebControl timer temperature humidity I O controller network relay control $49.94 Time Remaining: 1d 16h 8m Buy It Now for only: $49.94 |
 SSR 3 32V DC Control Solid State Relay 80A 380V $0.01 Time Remaining: 2d 17h 22m |
 SSR 3 32V DC Control Solid State Relay 10A 380V AC $0.99 Time Remaining: 2d 17h 36m |
 DELTROL 900 DPDT 20245 84 CONTROL RELAY NEW 30 AMP LK $19.00 Time Remaining: 4d 13h 17m Buy It Now for only: $19.00 |
 bltc r 120v ballast load ttransfer control $70.00 Time Remaining: 3d 6h 16m Buy It Now for only: $80.00 |
 ROWAN CONTROL 2150 QSDAQ 6 CONTACTOR LOOK $8.10 Time Remaining: 3d 9h 19m Buy It Now for only: $8.99 |
 DC12V relay isolationcontrol panel module controller For Home appliances control $5.69 Time Remaining: 14d 28m Buy It Now for only: $5.69 |
 OPTO 22 ssr solid state relay 240D45 ac control qty 4 $8.50 (2 Bids) Time Remaining: 3d 9h 58m |
 LOT OF TELEDYNE SMALL VDC CONTROL SOLID STATE RELAYS LOOK $7.99 Time Remaining: 17d 2h 42m Buy It Now for only: $7.99 |
 OPTO 22 Solid State relay 240D10 10 amp 120 240 a c control SSR QTY 8 $8.00 (1 Bid) Time Remaining: 3d 9h 59m |
 Remote monitor temp humidity I O relay control email alert WebControl X10RF $29.00 Time Remaining: 3d 12h 23m |
 Control Solid State Relay SSR 40DA 40A 24 380V AC Module Fast Switching $5.59 Time Remaining: 17d 21h 43m Buy It Now for only: $5.59 |
 2 NIB AIR PRODUCTS AND CONTROLS MR 201 C R MULIT VOLT CONTROL RELAY $15.99 Time Remaining: 3d 13h 39m |
 PLC Programmable Controller XINJE XC1 16R C 24V 8 Relay output 8 input $35.00 Time Remaining: 3d 22h 5m Buy It Now for only: $45.00 |
 Dual PID Temperature Controller Thermocouple TD4 SNR Solid state relay SSR 25 DA $32.99 Time Remaining: 21d 5h 24m Buy It Now for only: $32.99 |
 Allen Bradley Control Relay 700 P400A1 10A 600V 4065 $39.99 Time Remaining: 4d 3h 47m |
 Siemens 3RH1122 1BB40 Control Relay 24V NOS $23.99 Time Remaining: 4d 5h 32m |
 220V Digital Temperature Controller Whit sensor 2 10A Relay 2500W $24.99 Time Remaining: 17d 14h 19m Buy It Now for only: $24.99 |
 Allen Bradley Control Relay 700 CF310D 10 A 600V 3806 $32.99 Time Remaining: 4d 6h 25m |
 LOT 3 TYCO POTTER BRUMFIELD PB KRPA 14AN 120 CONTROL RELAY 120V 11 PIN 54456 $3.00 Time Remaining: 4d 6h 50m |
 NC400 Electrical Remote Control Via Internet 4 Relay LAN Cable $64.50 Time Remaining: 29d 8h 36m Buy It Now for only: $64.50 |
 TYCO POTTER BRUMFIELD KRPA 11DG 24 CONTROL RELAY 8 PIN 54455 $3.00 Time Remaining: 4d 6h 51m |
 GENERAL ELECTRIC GE D 1255K16 705 METER RELAY CONTROL UNIT 120V AC 5A AMP 55082 $3.00 Time Remaining: 4d 7h 14m |
 ABB MMCO Overcurrent relay 3 phase 5 amp uP controlled $239.73 Time Remaining: 19d 5h 48m Buy It Now for only: $239.73 |
 NIB GE RR7 REMOTE CONTROL RELAY 21 30VAC COIL $19.99 Time Remaining: 4d 12h 24m |
Relay Control
A.C. Solid state relay circuit and structure
Solid state a.c. relays are well known. Such relays, with optical isolation between input and output, are also well known. In presently existing devices, many discrete components are commonly required to complete the a.c. circuit. Thus, it maytake thirty or more discrete thyristors, transistors, resistors and capacitors to manufacture a single device. Attempts have been made to integrate the various parts of the entire solid state relay, but these have met only limited success due to the mixof high voltage and high power components.
Solid state relays made in the past have also employed zero voltage crossing circuits to ensure turn on of the thyristor only when the a.c. voltage is within some small "window". These circuits have also been relatively complex and difficult tointegrate into the main power chip. Thus, zero cross firing circuits have required the use of a discrete resistor connected across the power terminals. These resistors have not been easily integrated into a single chip because of the difficulty offorming this resistor on the chip surface.
It has also been difficult to provide so-called "snubberless" operation for the relay under any inductive or resistive load. Thus, while solid state relays may operate well under resistive or slightly inductive loads, they may tend to "halfwave" or "chatter", which is a condition wherein a relay turns on only for one-half of a cycle, under a highly inductive load. This has occurred in the past because the relays are commonly provided with conditioning circuits for suppressing fast turn onof the circuit under some fast transient or high dV/dt condition. When the device is operated under a very highly inductive load, however, voltage transients are commonly generated repetitively during device turn on. When the signal conditioningcircuit misinterprets this as a transient signal, it shuts off the power output during a particular half phase of the operation. The circuit will then appear to turn to normal during the next half wave and the relay will turn on. This condition repeatsso that the relay turns on only during one or another of the half waves of the full cycle. To avoid this condition, relays of the past have been formed with reduced firing sensitivity and this has required reduction of sensitivity to optical firing.
Since prior art relays have been relatively complex, they have required substantial volume for their housings. Moreover, solid state relay of the past have been limited to a maximum temperature rise of about 110° C., thus limiting theircurrent-handling capability. Finally, solid state relays of the past have been relatively expensive in view of the need for large numbers of discrete components and large housings.
In accordance with the present invention, two identical thyristor power chips are provided for an a.c. relay wherein the power chips are both of lateral construction with both cathode and anode electrodes at one surface of each device and whereineach of the chips can be optically fired and has an optically sensitive upper surface which, when illuminated, will permit the device to become conductive between its anode and cathode electrodes.
The gate circuit of each of the thyristors is connected to a novel control circuit, formed either of discrete components or of components merged within the body of the semiconductor material forming the thyristor. The control circuit is operableto prevent turn on, even though the surface is illuminated, when the voltage across the device exceeds a value greater than some predetermined window value, or when high dV/dt transients appear across the device. This control circuit includes a clampingtransistor which can be turned on to clamp the gate of its respective thyristor and a capacitive divider circuit connected across the main power electrodes. The capacitive divider applies a control signal to the control transistor.
One of the capacitors of the capacitive divider includes the distributed capacitance of the control transistor. So long as the control transistor is on, its respective power thyristor cannot turn on even though its surface is illuminated. Thecapacitive divider is arranged so that the control transistor is normally turned on for all absolute voltages across the main device greater than some relatively small window value. Thus, the power thyristor cannot turn on outside of this small windowvalue or zero cross value.
The novel capacitance divider, in combination with the control transistor, will now operate to suppress both fast transients and still allow the device to function under its normal load condition. Thus, voltage transients which are generatedrepetitively during device turn on under highly inductive load conditions will not be misinterpreted as a fast transient and the power thyristor chip will be permitted to turn on in its normal manner under even highly inductive loads.
The novel signal conditioner of the invention also allows for substantial improvement in optical sensitivity of the device without misfiring. Note that currently available optically isolated triac drivers and the like are always limited eitherin dV/dt capability or optical sensitivity because of their inability to separate low level command signals from transients.
A novel housing is provided for the two chip arrangement in which the two chips are easily and inexpensively connected in parallel with one another and are protected from the outer environment. An alumina substrate or other suitable heatconductive but electrically insulative substrate is provided with suitable conductive patterns thereon for receiving the various chips of the switch and for connecting the chip electrodes to suitable output leads. The two identical thyristor chips whichare to be connected in anti-parallel are symmetrically secured to respective conductive pads on the substrate and are in alignment with one another and with the terminal ends of two conductive patterns on the substrate. Two continuous wires are thenstitch-bonded to the thyristor pads and conductive leads in such a manner that one lead wire is electrically connected to the anode pad of one chip, the cathode pad of the second chip and one of the conductive patterns which is connected to an input a.c.lead. The other wire is similarly connected to the other electrodes and conductive pattern to conduct the thyristors in anti-parallel.
plastic cap of a white illumination reflecting material then is secured to the substrate and covers the region of the substrate containing the LED and the two power chips. The interior of this cap may be filled with a transparent plastic whichencloses and encapsulates the surfaces of the chips and their interconnecting leads.
If the control circuit for the power transistor is carried out in discrete form, the discrete components may also be suitably connected to this substrate. Preferably, however, these components are integrated into the individual power chips sothat the entire solid state relay will consist of two power chips and their controls, the LED chip and the various support structures previously described.
About the Author
Greegoo is a ISO9001 certified professional manufacturer and exporter of thyristor diode modules, solid state relay, phase control thyristors, rectifier diodes, circuit breakers, switching power supply, magnetic and dc contactors, proximity and photoelectric sensors, safety light curtains, limited switches, digital panel meters, current transformers and switchgears etc.
FORD Relay control module problems?...Need some ideas....?
A 1993 Ford Taurus 3.8L V-6 is giving me starting problems. All started when......The relay control box (in R front topside between radiator and battery ...huge wire harness) was buzzing with no fuel pump running and setting for start. I replaced the old with a new Borg Warner (part R4123) Relay Control ......Now when I try to start, I get a constant rapid clicking with the check engine light flashing totally synchronized to clicking sound. and the fuel pump now runs non-stop...All the fuses inside car under dash are good. The large fuses in the box in right rear of engine compartment next to fire wall...All good. Have fuel pressure now. Tested Alt. (Voltage Regulator is attached to it) and Electronic Control Module at Autozone..They said they were good. Is there another fuse or relay somewhere in the circut that is causing all this?? Any help going in the right direction would be GREAT!!! Thanks!
Either you have a short to ground or you have a defective computer.
The computer calculates all sensor readings and adjusts everything in conjunction with the computers output signals. If the computer has become defective or corrupted, the signals will be prominent.
Wells doesnt make a technically perfect product, so this is why we never use Wells, we would go to a ford certified autoparts store or the dealer for these items.
Wireless 10 Relay Controller Demo
