[TechAssist] Re: Zener diode test
- From: "Christopher Barnak" <cbarnak@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 09 Jun 2005 07:42:36 -0400
Use a 1 k resistor in series and check the zener voltage point.
Christopher Barnak, CET
Norfolk Public Schools
Electronics Maintenace
966 Bellmore Ave.
Norfolk, Va. 23504
Phone 757 628 3385
Fax 757 628 3392
cbarnak@xxxxxxxxxxxxx
>>> greentron@xxxxxxx 6/8/2005 10:02:05 PM >>>
Sounds like plain vanilla 9.1 volt zeners. But to answer your question,
some
"zeners" are actually ICs and some have one or more forward biased
diodes in
series with the zener element and some may consist of two or more
zener
elements in series.
Jerry Silverman
Greentron Inc
4 Newland Ave Greenville SC 29609
Fax/Phone 864 232 3889
greentron@xxxxxxx
----- Original Message -----
From: "Paul" <dntwntv@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, June 08, 2005 9:44 PM
Subject: [TechAssist] Zener diode test
> Are there zener diodes that cannot be measured? I have 4 Sony zeners
P/N
MTZJ-T-77-9.1B on a board. They do not cross and I am guessing they are
9.1v
zeners. They all are either open or they do not measure. Have lifted
one end
and measured with two different meters,Beckman and a Fluke still no
reading.
Can't believe all 4 are open.
>
Paul
>
> Paul ,B
> Central TV&Video
> 911W Grand Ave
> Grover Beach Ca.
> (805)481-8084
>
>
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