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Diode Blocking Circuit Question
Diode Blocking Circuit Question
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Old 14th May 2007, 02:59 PM   #1
silentblackhat is offline silentblackhat  United States
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Default Diode Blocking Circuit Question

I have my circuoit posted below. Iv never used a Diode before so this is why im posting it. im sure i have it correct but, just to make sure...

The purpose of the circuit is to have input 1 and input 2 be able to turn on the "main relay" but when input 1 is activated, it wont be able to activate the coil of the second relay.

When input 2 is activated, it will have 12v input into the circuit, activate the 2nd relay, then go past the diode and into the Main Relay activating it.

I wont need a diode blocking input 1 because even if that switch is on, its the same 12v from the battery as input 2 would have.

All relays are "12 Volt Automotive" relays. Also what im wondering is, will any diode work? I bought some Epoxy Rectifier diodes that have a 3amp rating; will those work?
Any help is greatly appreciated

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Old 14th May 2007, 03:43 PM   #2
Jan Dupont is offline Jan Dupont  Denmark
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Your circuit should work
And a 3A diode should easily be able to handle the Current to the Main Relay....
Free Schematic and Service Manual downloads www.audio-circuit.dk, Spare time company (just for fun): www.dupont-audio.com
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