Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

[SOLVED] Simple switch trigger?

Status
Not open for further replies.

fishercounter

Newbie level 1
Newbie level 1
Joined
Nov 29, 2013
Messages
1
Helped
0
Reputation
0
Reaction score
0
Trophy points
1
Activity points
12
I'm trying to add a switch that controls two seat warmers at once. I know I need two diodes to isolate the new circuit so the old switches don't trigger themselves.

Anyways here is the problem I'm having.

I hooked up a lead to one switch, and when I touch the lead to the chassis ground it's just like I'm pressing the switch, so perfect. BUT when I add on the diode (yes I know they have a direction) it no longer works, what could the diode be doing to cause it not to work?

Do I need to add a capacitor? the diode is interfering somehow, I just don't understand what it's doing. I know the voltage drops from 4.7 to 4.4 and the amps drop from 0.9 to 0.8 when the diode is inline.

I thought a diode simply allowed current to flow through, but I think the voltage drop is causing the circuit not to identify "my switch", how do I compensate for the diode? capacitor? my electronics knowledge is limited. Thanks.
 

Without a schemtic it's pretty difficult to answer your question. You don't say where you're 'adding on the diode'
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top