Iq up from 1A
when you decide what Iq , calculate dissipation per channel , then multiply that with 2,5 (or even more , if you wish)
example - PSU +/-24V , Iq 1A , that means 48W dissipation per channel ..... which means at least 125VA xformer for one channel
with adequate cooling - I would go to 1A5 Iq , maybe with 2 pairs of output per channel , meaning that each pair have Iq of 750mA
good for xconductance ( read - dampingfactor ) etc ...
when you decide what Iq , calculate dissipation per channel , then multiply that with 2,5 (or even more , if you wish)
example - PSU +/-24V , Iq 1A , that means 48W dissipation per channel ..... which means at least 125VA xformer for one channel
with adequate cooling - I would go to 1A5 Iq , maybe with 2 pairs of output per channel , meaning that each pair have Iq of 750mA
good for xconductance ( read - dampingfactor ) etc ...
Attachments
I would set the bias current with just a resistor.
By changing R21/22?
no.By changing R21/22?
By removing Q9.
The inherent temperature stability of the Lateral FETs shown do not require a temperature compensated Vbe multiplier. A resistor is sufficient for applying the gate to gate voltage.
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.