When testing the response of many pulse-width-modulated (PWM) systems, there's a need to independently vary a multivibrator's frequency and duty cycle. Such systems ...

Monostable multivibrator circuit diagram and its working. It can be used as timers, delay circuits, gated circuits etc. Read this post for more details about its circuit, operation and uses.

The figure shows a 555 timer used as an astable multivibrator. Determine the values t1, t2, frequency and duty cycle of the output waveform. When a 555 timer operates as an astable multivibrator, the ...

My teacher friend was looking for Christmassy technology ideas for a science + engineering club. And I said that flashing leds might be good, and if you can get three phases going, you can have a ...

Incremental-rotation or linear encoders are very common, but normally they do not provide a direction signal. This design shows an easy way to detect forward or reverse direction. Incremental encoders ...