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Ruud Broens Ruud Broens is offline
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Default Light of B

On a seasonal note, what kind of contraptions
do you all use for ON indicator (B+ indicator) ?

in the guitar multifx box i'm developing, that hopefully
sees the light of day next quarter , i use a
B+ of 240V delivering just a handful of mA's. with 2
680 uF 200V atx supply cap's, balancing/bleeder R's
across in total 120K for 2mA, 33K.27K.33K.27K
replace that bottom 27K with a 22K in series with
-in parallel- 4K7, 6V zener,1K2 +white LED
forms a fine B+ indicator, lighting up visibly at
around 40 V B+ and above.

so whaddoyouuse ?
:-)
Rudy


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