This circuit is from 1970 documentation. The SCRs are types of the era that can be replaced with 106 Series equivalents. The circuit is powered with 100 V dc.
The circuit shown in the figure is suggested by Texas Instruments and allows data transmission on TTL devices...
This voltage-controlled oscillator was found on an Elektor from the 90s. The components are from...
This circuit is suitable for modulating small FM transmitters for eavesdropping or espionage. The...