This circuit is from a Radio Electronics magazine from February 1992. The circuit has the effect speed dependent on C1 and adjusted by R3.
This continuous wave transmitter (CW) can send signals in the 30 to 100 MHz band, depending on the...
Relays specially designed for operation in harsh environments of Phoenix Contact can be purchased...
January 2017 - Pulse Electronics ER11 transformers with high insulation can be obtained from...