Relay Switch (CB25864E)

This CMOS 4001 oscillator alternately turns the relay on and off at times set by R2. The circuit is from Electronics Now magazine, June 1995.

| Clique na imagem para ampliar |

500 mW push-pull amplifier (CB21795E)
This circuit was found in a Mullard transistor manual from 1960. Note the symmetrical power...
High impedance transistorized stage (CB7468E)
This amplifier step with a transistor has an input impedance of 100k to 10 M. The transistor can be any...
Transmitter for of 15-meter range (CB20400E)
I found this little signaling transmitter in old American documentation. The circuit has a good...