Simple crystal oscillator 1-10MHz using inverter gate
This Simple Crystal oscillator Circuit using 74LS04 that provided square wave of 1MHz to 10MHz, Use inverter gate IC and control frequencies with crystal [...]
Increasing current gain of transistor relay driver
How to control a load with a digital circuit like Arduino? A transistor relay circuit may be answered for you. The output pulse from the digital circuit to biased the…
Normal multimeter cannot check it. This circuit can help you.
It may be difficult. In the design of the BCD signal generator circuit by pressing a key. Here is how you make a keyboard encoder circuit for 16 keypads.
These are many Monostable multivibrator using 555 timer. We use it as timer for control a load, LEDs,driver relay. Which trigger them using a normal switch. [...]
I like to collect the circuit diagrams. Because when I want to create a great project. Sometimes, even we check it well. But it does not work. The good solution…
The simple bounceless switch circuit. It is one kind of electronic switches, high quality, and low noise. They are suitable for the digital circuits. Why?