This amplifier with old germanium transistors is from a 1957 documentation. The power is a few hundred milliwatts and the transformers are common types of driver and output of the time.
This circuit can be implemented with either TTL or CMOS logic. The speed depends on the logic used...
This is the receiver for the CB18476E, but it can be used with other transmitters found on the...
With a 1 500 uFcapacitor this timer can reach times up to one hour. The capacitor must be of good...