The TAA300 integrated circuit is not common today. In fact, the circuit shown is from a Dutch Philips documentation from 1969. The output is 8 ohm speaker and 9 V power supply.
This is the radio receiver for the previous infrared alarm radio transmitter. It contains the...
This S-meter or signal strength meter, was originally designed for the 80's Regency receiver, but can...
General Electric suggests this circuit in an 80's documentation. The circuit makes use of PUTs...