Hello. Recently built this phaser. It works but the 3046 and 220Rs get quite hot. I swapped the 3046 with BC550s in 4 positions and the 123 transistor is boiling.
When manipulating the Phase control I get a +2.2v to +4v swing at pin 8. With only the 3046 and vtl5c3/2s in, the circuit draws 33ma on the +15vdc side. I'd like to know more about this part of the Phaser. I looked around for other "vactrol driver" schemes and found nothing that looks like this one. Very interesting.
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Thanks Ken!
-Hans Buscher
310-776-0143 text
[Non-text portions of this message have been removed]
When manipulating the Phase control I get a +2.2v to +4v swing at pin 8. With only the 3046 and vtl5c3/2s in, the circuit draws 33ma on the +15vdc side. I'd like to know more about this part of the Phaser. I looked around for other "vactrol driver" schemes and found nothing that looks like this one. Very interesting.
----------
Thanks Ken!
-Hans Buscher
310-776-0143 text
[Non-text portions of this message have been removed]