9V-12V Negative Voltage Regulator circuits
See two negative Voltage Regulator circuit ideas. Do you know? we can use PNP transistor and Zener diodes in these example circuit 12V,9V at 700mA output Read more
12V to 300V DC-DC converter circuit
This is a 12v to 300v dc-dc converter circuit using 2N3055 transistors and 2N1305 are pillar equipment and power transformer transform the sky tallly go up then change voltage regulator rectifier with diode and Capacitors make output have voltage about 300V at Current 55mA. With this circuit a friend can apply the work next. Request … Read more
How to use a phototransistor circuit | Light controller switch
I am going to show you how to use a phototransistor circuit is simple. To make it a light controller switch or relay with basic components like a transistor, IC, and more. Imagine when The Sunlight then the Relay Switch on to load as a fan runs. we are happy. Then sundown. the relay switch … Read more
Learn ULN2003 stepper motor driver circuits and pinout
How to use ULN2003 stepper motor driver for microcontrollers, Arduino, PIC, MCS51, etc. It’s easy to use, small, and cheaper than transistors. Read more
Simple IC-4011 LED flasher circuits
This is simple ic 4011 led flasher circuit that I would link to suggest you make it.But before you can use transistors,which difficulty.We learn digital IC. […] Read more