EEVblog Electronics Community Forum
Products => Test Equipment => Topic started by: Martin.M on September 15, 2019, 07:22:21 pm
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I have a repair in the 8552A IF Plugin for Spectrum analyzer.
Problem: there are 2 neon bulbs what are zener with 103 volts, 0,2 up to 3mA.
I am searching for replacements, it have to be z 103v with low temperature drifting.
For insiders: they are in the vertical deflection board, it`s the second from the backside.
Martin
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done !
a new ZZ1000 neon stabi (= 81V) in series with a BZX55C22 (22 volts zener) delivers 102,3 Volts (22°C),
hair dryer blown to 50°C = 102,38 Volts. The spectrum analyzer likes that and is working.
Martin