We found this configuration in a 1974 publication. Transistors can be replaced with equivalents such as 2N2222. The circuit has a dynamic range of 60 dB.
Other operational amplifiers can be used in this conventional filter that rejects only one...
The integrated circuit used in this' 90s amplifier is not very common today. The supply is 24 V,...
This squelch circuit is placed at the input of the single receiver audio amplifier stage. Its...