A great example is this simple wireless AC current detector from [NEW PEW]. The circuit is a simple one, ... The spring from a ballpoint pen is soldered to the base of a BC547 transistor, ...

How to Install a Smoke Detector. Other smoke detectors circuits. please send us an email if you know other interesting circuits. RE46C190 photoelectric smoke detector – source Using this photoelectric ...

The shunt + iso-amp current sensing devices on the output phases and DC bus provide fault detection in addition to current measurement. Typical IGBT short-circuit survival times are rated up to 10 ...

When you bias a transistor with a resistor, you are really assuming you understand how much voltage will be across the resistor and, thus, set the current. However, in real life circuit parameters ...