Recently pulled a VTVM from the recycle ,
![HK AV-2.JPG HK AV-2.JPG](https://cdn.imagearchive.com/groupdiy/data/attachments/84/84523-13ad9b382b2b6dd0313b27bb7b27deac.jpg)
A few safety issues to deal with ,
first a three core mains cable , with a decent ground to chassis .
Then Find something to replace the dirt oxide rectifier and mallory caps dating back to 1953 .
A BNC in place of the banana plugs seems appropriate .
The circuit doesnt look too far off being usable for audio , but most likely all hell will break loose when the feedback through the meter is cut .
I can run it on 110v for now via an autoformer , later if it turns out any good I can make a new PSU in a seperate enclosure .
![Av-2.JPG Av-2.JPG](https://cdn.imagearchive.com/groupdiy/data/attachments/84/84524-6951a6dda47c0edb964222a7016ce14b.jpg)
![HK AV-2.JPG HK AV-2.JPG](https://cdn.imagearchive.com/groupdiy/data/attachments/84/84523-13ad9b382b2b6dd0313b27bb7b27deac.jpg)
A few safety issues to deal with ,
first a three core mains cable , with a decent ground to chassis .
Then Find something to replace the dirt oxide rectifier and mallory caps dating back to 1953 .
A BNC in place of the banana plugs seems appropriate .
The circuit doesnt look too far off being usable for audio , but most likely all hell will break loose when the feedback through the meter is cut .
I can run it on 110v for now via an autoformer , later if it turns out any good I can make a new PSU in a seperate enclosure .
![Av-2.JPG Av-2.JPG](https://cdn.imagearchive.com/groupdiy/data/attachments/84/84524-6951a6dda47c0edb964222a7016ce14b.jpg)