Diode Blocking Circuit Question

silentblackhat · 14th May 2007, 02:59 PM

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

Jan Dupont · 14th May 2007, 03:43 PM

Your circuit should work

And a 3A diode should easily be able to handle the Current to the Main Relay....

14th May 2007, 02:59 PM	#1
silentblackhat diyAudio Member Join Date: Jul 2004 Location: kansas	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

14th May 2007, 03:43 PM	#2
Jan Dupont diyAudio Member Join Date: Apr 2003 Location: Copenhagen, Denmark	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, Company: www.dupont-audio.com, Joint venture: www.DupontMantra.com

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