This circuit was obtained from the 1976 Siemens Integrated Circuits Manual. It is the circuit for applying the TBA400 as a broadband amplifier.
We found this timer circuit in a publication in the 90's to turn off a device powered by 4...
This circuit is suitable for use with 1400 kHz range FI receivers. Changes can be made to other IF...
The transistors of this 12 V x 150 mA power source can be BC558 for PNP and BD135 for NPN. The...