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a transistor circuit for driving the coil of a magnetic relay.
If you are questioning about different relay (contactor) constructions, the terms moving coil and moving iron designate what part of the relay moves and carries the conductor that makes or breaks a circuit.
Just a guess as I can't see your circuit, but this is one way sometimes used to suppress the inductive kickback when current to the coil is turned off. I'd have to see the circuit to give a more definite answer.
If you are talking about a 6 volt coil, yes, so long as the contacts are rated for the 230 volt circuit. If you are talking about 6 volt contacts, no, absolutely not.
The resistor in the snubbing circuit is there to minimize the reverse EMF spike that occurs when a DC inductive load, such as a relay coil or other electromagnet is released. Opening the snubbing circuit will expose the driving circuit to high voltage transients that can damage it.
it would cause a certain lamp to be going on and off. (flickering )
a transistor circuit for driving the coil of a magnetic relay.
By covering the photo cell and if the relay coil doesnt work.
By covering the photo cell and if the relay coil doesn't work.
Transformer is HEART of the substation and Circuit Breaker is the LUNGS of the substation.At faulty condition, large amount of current will flow.so trip function is very important at that timeone coil is faulty means, another one coil will trip the connection to the healthy circuit.
There are numerous applications for a normally-closed relay contact. It is used whenever you want to disconnect a circuit when the relay coil is energised.
chiltons says it the number 23 relay in the fuse panel located under the hood near the drivers' side coil. i would like to know where the open circuit relay is myself lol
I think that would have to be some relay or contactor coil for a fan, compressor or relay contacts.
The relay coil is an inductor and, as such, resists a change in current. When you de-energize the coil, it attempts to maintain the current flow, but it cannot because you have opened the circuit. This causes a high voltage spike to be developed across the coil which is of opposite polarity to the normal current. The diode conducts, dissipating the current and preventing the voltage from exceeding the safe operating voltage of the driving circuit, often a transistor. The Diode is wired so that it is in reverse during normal operation, so no current passes through the diode and does not affect the coil it is parallel connected to.
Could be the auto shutdown relay or the circuit. or a bad starter. pull the plug off the ign coil and put a light tester in the middle port . If it doesent light up than it did not ground you autoshutdown relay. Bad relay or bad circuit. Turn your key forward and listen to see if the fuel pump pressurizes. If you don't hear the fuel pump that probably means your auto shutdown relay has kicked on. If you had to power to the coil in conjuction without the fuel pump pumping than a short in your ignition circuit or faulty component is triggering your ato shut down relay.
You will need an interpose relay. This relay will have a 24 volt coil. The circuit power for the relay will come from a 120VAC to 24VAC volt transformer. The 24 VAC circuit will have the thermostat in series with the coil of the relay. Thermostat calls for heat, the coil energizes and the relay's contacts close. Your circulator pump is controlled by the relay. On selecting the relay make sure that the contact ratings can handle the full load amps of the circulator. A contact rating of 120 volts at 15 amps will do very nicely.
A relay will have a control circuit and a function circuitcould be the same feed line. One set of terminals (Hot and Load) can be activated at all times, but will not function until the control circuit is closed. The control circuit has a Hot and a Ground--when activated either by supply hot or ground by switch. The internal coil closes allowing the function circuit to operate. The purpose of this relay is to reduce the spike to the alternator. It takes less current (voltage) to close the coil on the relay than it would to operate the accessory that it controls