We found this circuit in an English publication from 1969. It shows how we can implement a bridge null detector using common general purpose transistors.
Radio Electronics magazine published in a 90's issue this simple alarm that can use any general...
The duty cycle of a Schmitt Oscillator can be programmed by R1 and R2 in this circuit. The...
This first order Butterworth filter is tuned to frequencies around 1 kHz. The frequency is given...