Another triggered oscillator that we found in the November 1984 Radio Electronics magazine. The frequency is also given by R1 and C1.
This small transmitter with 2 transistors can reach several hundred meters using a 30 to 70 cm...
This circuit provides a logic output signal when the voltage exceeds a certain value. The circuit is...
With this circuit it is possible to add a conductance scale to a common multimeter. The circuit was...