Using a period sensor, this circuit was found in the February 1986 issue of Radio Electronics magazine. The sensor is a Philips of the period.
This continuous wave transmitter (CW) can send signals in the 30 to 100 MHz band, depending on the...
This circuit produces a sine 1 kHz signal. The frequency is given by C1, C2 and C3. This is a...
We found this configuration in National Semiconductor's Linear applications Handbook. The circuit...