[sdiy] HA12019 (It's a VU meter chip)

[Ken Stone]

>In order to do this, I had to rip out the cassette deck's PSU as well. This 
>is because the VU meter requires 3.2volts AC. This seems horribly low for 
>some kind of plasma discharge display so I figure there's something gnarly 
>going on inside it's little glass envelope. There's no other components on 
>the board other than the 2 VU chips.

These displays have a cathode wire that needs a low voltage. Also, it is
quite possible to run them on as little as 5V. I have done so before.

Ken
_______________________________________________________________________
Ken Stone   sasami at hotkey.net.au  
Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
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