MOS Amplifier

[atisa188]

 

[atisa188]

Try muting the control amplifier section

 

[zhum]

Very good high-speed rectifier filter design, how to see only PCB diagram, please add circuit diagram, thank you!

 

[atisa188]

When there is a signal input, MUTE2 changes from -15V to +15V

 

[atisa188]

Another mode controls the second level

 

[atisa188]

When there is no signal input, MUTE2 becomes v-15 and outputs -1.2MV

 

[atisa188]

Structure diagram

 

[atisa188]

main board

 

[atisa188]

pcb layout: input and op amp

 

[atisa188]

main pcb

 

[atisa188]

OP-AMP is Aluminum substrate circuit board

 

[atisa188]

panel

 

[atisa188]

The input and output terminals are directly welded

 

[jan.didden]

Muting with a resistor/FET is risky, the non-linear capacitance it presents when un-muted may cause distortion, that depending on the impedance at that point.
A relay is risk-free.

Jan

 

[atisa188]

BACK PANEL

 

[atisa188]

Muting with a resistor/FET is risky, the non-linear capacitance it presents when un-muted may cause distortion, that depending on the impedance at that point.
A relay is risk-free.

Jan

Thanks for the reminder, here is also an attempt to get a high signal-to-noise ratio

 

[atisa188]

go on

 

[atisa188]

speaker terminal bracket

 

[atisa188]

sank drill hole, For shorter traces

 

[atisa188]

up