This circuit is from a 1924 book by Gernsback. The receiver uses two tubes and listens to headphones. Power is supplied by battery with the indicated voltages.
This circuit is from a 1978 optoelectronics manual from Texas Instruments. The transistor can be a...
This circuit can be used with the CIR12053 receiver or with others shown in this section of the...
We found this configuration in the 1964 RCA transistors manual. As indicator loads in each stage,...