This General Electric circuit is from the 80's. The PUTs used in this meter are not common components today.
This limiting circuit with an operational amplifier has an adjustable cut-off point and can use...
We found this circuit in a 90s Radio Electronics. The circuit uses a transconductance operational...
This circuit provides 70 W at 8 ohms and 100 W at 4 ohms. We found this amplifier in a 1992...