This circuit is from a 1964 Electronic Design book that presents application ideas for transistors. The circuit uses a transistor from that time, but modern equivalents can be used.
This circuit produces modulated tones in a loudspeaker. The effects can be adjusted by the...
This circuit is from an old 1953 publication using one of the first commercial transistors...
This transmitter emits signals in the FM range, reaching a few meters away. The modulation...