Hi Guys
My first post on these Forums. I could not help but ad my 2 cents worth to this thread.
I have been a TV Tech for many years and despite many other techs I know I have stuck steadily to an Analogue meter for fault finding and testing transistor and diode forward biasing. The reason is simple:
An Analogue meter tends to load the semiconductor junction being tested for forward bias with a few Milliamps of current and will provide an accurate indication if the junction is failing or has become thermally compromised.
A Digital meter cannot be trusted for this as it in no way actually puts any current through the junction. You get a beep and the Digital meter reports all is OK.
In this specific arena, the Analogue meter wins hands down.
Anybody else had this experience and consistently trusts an Analogue over Digital for junction testing?
Cheers and thanks
My first post on these Forums. I could not help but ad my 2 cents worth to this thread.
I have been a TV Tech for many years and despite many other techs I know I have stuck steadily to an Analogue meter for fault finding and testing transistor and diode forward biasing. The reason is simple:
An Analogue meter tends to load the semiconductor junction being tested for forward bias with a few Milliamps of current and will provide an accurate indication if the junction is failing or has become thermally compromised.
A Digital meter cannot be trusted for this as it in no way actually puts any current through the junction. You get a beep and the Digital meter reports all is OK.
In this specific arena, the Analogue meter wins hands down.
Anybody else had this experience and consistently trusts an Analogue over Digital for junction testing?
Cheers and thanks