2N3055 Power Amplifier Circuit
Amplifiers
We like a 2N3055 Power Amplifier Circuit. Although the it is the very ancient transistors, but it still have a lot of classic and very good sound. It is popular forever, very cheap, easy to find, easy to use. We recommended the 2N3055 power amplifiers list below!
Mini intercom circuits using  one OP-Amp IC
Amplifiers
These are two simple mini intercom circuit. They use IC-OP-amp as main parts. 1. LM380 mini intercom circuit It uses IC Op-amp number LM380 just one as a result can work already. When switch S1 stay in a position speaks loud show in circuit picture. The loudspeaker of mother station will perform to is microphone for drive op-amp. By change step up transformer or T1. The switch of child station will must is in a position listens. The voltage of power supply stay in 8-20 volts sections. LM390 MiNi Intercom Today we find many of the IC number LM390 in …