Here is the circuit of an ultra sensitive IR receiver that can be used to switch on various AC devices through an IR transmitter. It uses the Photo transistor L14F1 to detect ... and sinks current ...

In theory, the hundreds of photons, controlled by the triggering photon, could fan out and switch off hundreds of other transistors in an optical circuit ... signal to the input frequency and ...

A diagram of an n-channel JFET ... Thus the three basic bipolar transistor circuit configurations have equivalents with a FET; common-emitter becomes common-source, common-base becomes common ...

But there are advantages to using a high-side switch in your circuits. Switching the high side deals with more unknowns than low side; the input voltage ... use a standard transistor it’s ...

The switch is a semiconductor relay S202DS2 and the oscillator is 4060. From the moment that T4 and T5 are opened, relay’s LED start to light and powers the lamp. As soon as one of the transistors ...