diodes help

venomconcepts

venomconcepts

Member +
any one on here that is good with diodes
i need someone that can builed me a simple module so that i can control the tacho signal from my autronic ecu to an apexi tacho
will post some diagrams later
 
venomconcepts

venomconcepts

Member +
Tachoadapter2.jpg
[/IMG]
 
Texx

Texx

Super Moderator
It's a simple enough circuit to build, but I'm not so sure it's a wise idea to ground the coils through a 1K resistor.
 
Texx

Texx

Super Moderator
That makes more sense, the first circuit diagram is just for driving the tacho. That would probably work OK.

Is there a suggested rating for the 1K resistor? I'm guessing a 1/4W would do the job?
 
venomconcepts

venomconcepts

Member +
Texx said:
That makes more sense, the first circuit diagram is just for driving the tacho. That would probably work OK.

Is there a suggested rating for the 1K resistor? I'm guessing a 1/4W would do the job?
Click to expand...

sorry not a fun of diodes but on the other diagram they say 100x10 1kohm resistor
so can you builed me one
cash waiting
 
Texx

Texx

Super Moderator
100x10 just means 1K, by doing the math a 1K resistor passing 12v would only need a power rating of 0.015W so a 1K 1/4W (0.25W) resistor should be fine.

You could easily buy all the components required for probably less than a £1 and it would be simple enough for you to put it together yourself.
 
Texx

Texx

Super Moderator
Shopping list:

1 * 15V Zener diode,BZX85C15 1.3W - click
2 * Rectifier diode, 1N4004 R0 - click
1 * Anti-Surge Resistor, 0805, 0.25W,1%,1K - click

The only problem is you'll probably need to buy them in bulk unless you have a local electronics store that can supply you.
 
You must log in or register to reply here.
Top