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Old 31st Jul 2021, 2:52 pm   #75
factory
Octode
 
Join Date: Jul 2009
Location: Cheshire, UK.
Posts: 1,706
Default Re: HP 180A Oscilloscope.

The Philips circuit for the solid state replacement of the neon voltage reference tubes is here.
https://www.vintage-radio.net/forum/...5&postcount=24

You will need to alter the resistor ratio for 82V (instead of the 103V for the Philips scope) as mentioned in the link.

David
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