What happens when a diode goes bad?
A bad (opened) diode does not allow current to flow in either direction. A multimeter will display OL in both directions when the diode is opened. A shorted diode has the same voltage drop reading (approximately 0.4 V) in both directions.
Why is a diode needed?
Despite being nothing more than a simple two-pin semiconductor devices, diodes are vital to modern electronics. Some of their most common applications include turning AC to DC, isolating signals from a supply, and mixing signals. A diode has two ‘sides’ and each side is doped differently.
What does a diode do on a golf cart solenoid?
A diode is a protection device across the contactor coil (solenoid relay) and in general, is a one way gate for electricity. The contactor coil is an electromagnetic device in your electric vehicle which controls the flow of power to your electronic speed controller.
What is 1N4001 diode used for?
The 1N400x (or 1N4001 or 1N4000) series is a family of popular one-ampere general-purpose silicon rectifier diodes commonly used in AC adapters for common household appliances. Its blocking voltage varies from 50 volts (1N4001) to 1000 volts (1N4007).
How do you tell if a diode has failed?
If you get an open circuit in one direction indicating the current is blocked, and a low resistance reading in the other direction, the diode is good. If there is an open circuit in both directions, the diode has failed with an open circuit.
What are the two conditions under which a diode is operated?
Diode operation: (a) Current flow is permitted; the diode is forward biased. (b) Current flow is prohibited; the diode is reversed biased.
Does a golf cart solenoid need a resistor?
Prevents arcing across your solenoid terminals and keeps your electrical system safe. If you do have a heavy duty solenoid you will not only need this resistor, but you will need the upgraded Diode as well. Fits the Following Cart(s): All 48 Volt Golf Carts with a Heavy Duty 200 Amp Solenoid.
What is the purpose of a resistor on a solenoid?
Its purpose is to maintain the capacitors within the controller at the battery pack voltage so that when the contactor closes, no arcing occurs. Resistor value is determined by battery pack voltage.