The above circuit is a precision voltage source, and contains a temperature sensor with a...
This is basically a flasher circuit modified to turn on and off a bulb instead of a LED. It uses...
The ESR Meter is basically an AC Ohmmeter with special scales and protective circuitry. It...
This page describes the hardware and software design of a printer power switch controlled over...
A power supply circuit to bring 24VAC down to 5VDC. I have an L7805CV, but rectified (a bridge)...
Stop watch is made with a digital timer IC LM555 and IC MM74C926 4 digit counter with multiplexed...
If a transistor junction operating in Zener breakdown is used as a noise source, the amplitude of...
This is schematic of a synthesized PLL for the Low Power FM transmitter. By the way, you also can...
This design is based on one published by Milan Lulic in the German magazine elektroModell. Mr....
For the input and output voltage without isolation but only with a working switch and L, D, C...
By using a modified piezoelectric ceramics ashamed acoustic-electric transducer sound, light...
Circuit shown in Figure 3-164. The circuit can be manual and automatic two ways. During startup,...