Jimstim V1.5 D4 BLOWN....nearest Zener?

[efims]

D4 blown leading to low voltage(leading to drop in RPM).

I do not have replacement 1N4729 (as recommended) in

http://jbperf.com/JimStim/JimStim_v1_5_assembly.html


I have some :-

A) 1N4742
B) 1N4748
C) 1N4749
D) 1N4148

Which is the nearest without compromising performance and protection of the Jimstim?

Thanks in advance.

[racingmini_mtl]

None of them are of any use since they have a Zener voltage of 12V and more while you want a 3.6V one. Simply leave it off until you can replace it with the correct part. You'll just need to be more careful not to short anything.

Jean

[Myrrhstang]

You may have better luck if you search for a "3.6V, 1W Zener diode". That's all a IN4729 is -- nothing particularly exotic.

Depending on where you live, you might find a Radio Shack or Fry's that has them in stock. These days, I get most of my small parts online, from eBay or Amazon.com.