In the realm of electronics, varicap diodes, also known as voltage-variable capacitors or varactors, play a pivotal role. These devices exhibit a capacitance that varies with the applied voltage, ...

2019 marks the 100th anniversary of the Greinacher voltage multiplier, invented by Swiss physicist Heinrich Greinacher in 1919. In 1932, Douglas Cockcroft and Ernest Walton used this basic circuit to ...

[Hales] has been on a mission for a while to make his own diodes and put them to use and now he’s succeeded with diodes made of sodium bicarbonate and water, aluminum tape and soldered copper. By ...