8A solenoid coil driver circuit using MOSFET
You finish PWM signal with Arduino control solenoid valve. You should use solenoid coil driver circuit. Good choice. 2 MOSFET and a few parts
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July 15, 2019
Fixed voltage regulator working principle
Learn DC voltage regulator circuit, Types of, Fixed and Adjustable. How it works, for example, circuits using Zener diodes, transistors, and more.
June 14, 2019
Working principle of unregulated power supply in simple ways
Learn Unregulated power supply! Here an important basic. You should know. Diodes rectifier, Designing, reduce ripple, capacitors filter.
June 8, 2019
LM386 Datasheet Low voltage audio power amplifier
You finished an audio circuit. But the sound is too weak. Many people use LM386 to increase sound up to a speaker. Why should you do it too? Some said to try it now. But...it is better. If you read LM386 Datasheet before.
June 1, 2019
TDA2009 amplifier stereo 10W
The IC-TDA2009 amplifier circuit on stereo 10W+10W IC is to qualify from the power supply 8-24V, the current maximum of 1-2A. and 24V load 4 ohms [...]
May 31, 2019
Step up converter circuit using TDA2822
No light! because of a low voltage battery. How do you increase the voltage up? You can do many ways. And, I recommend a simple step-up converter circuit using TDA2822.
May 23, 2019
DC Boost converter circuit, 3.7V-5V to 12V-13.8V
DC Boost Converter circuit 3-5V to 12V-13.8V
I like the 12V LED. But I have only 3V of batteries. So, No light. When using this circuit, I can get light of the LED at 100 mA. And, an adjustable output voltage.
May 21, 2019