Two-tube regenerative receiver (T1594E)

This circuit is from a Radio Electronics from 1949. The circuit uses batteries as a source and listens to high-impedance headphones.

PLL 565 (CB4231E)
This is a typical application circuit of a 565 PLL. The circuit is suitable for selecting a 67 kHz...
ATA8520 Transceivers SIGFOX on a Single Chip (COM040E)
Mouser Electronics already has in stock the new RF transceivers Atmel / Microchip ATA8820 SIGFOX ™ for...
Voltage comparator oscillator (CB5972E)
The frequency of this circuit is approximately 1 Hz. Whenever the output is at low level, the LED...