Home Tube DIY Asylum

Do It Yourself (DIY) paradise for tube and SET project builders.

RE: My meter is scaled to 200 ma.

When you measured it, did the needle deflect? A volt meter will put 0.1 to 0.2 volts or so out when measuring resistance. Be careful with a meter as you can easily fry it by putting too much voltage or current on it if there is no internal or external shunt or voltage divider.

If your meter is set up as an ammeter, it will have a shunt resistor that the volt meter measures across. So, if the scale is 0.2A or 200mA, a 1 ohm shunt (internal or external) will make the meter see 0.2v at full scale. Good ol' Ohms Law.


This post is made possible by the generous support of people like you and our sponsors:
  McShane Design  


Follow Ups Full Thread
Follow Ups
  • RE: My meter is scaled to 200 ma. - Chip647 05:58:48 06/19/17 (0)

FAQ

Post a Message!

Forgot Password?
Moniker (Username):
Password (Optional):
  Remember my Moniker & Password  (What's this?)    Eat Me
E-Mail (Optional):
Subject:
Message:   (Posts are subject to Content Rules)
Optional Link URL:
Optional Link Title:
Optional Image URL:
Upload Image:
E-mail Replies:  Automagically notify you when someone responds.