In many electronics low voltage is not enough but need only higher voltage. Voltage booster circuit helps, take low voltage and makes it higher. This project for Simple Transistor-Based Voltage Booster Circuit show how to make voltage booster using simple parts like: PNP transistor 2N2907, NPN transistor 2N2222, resistors, capacitor, diode, inductor. It takes 3V […]
Simple White LED Driver Circuit using TPS61161A
White LEDs are very common now for lights. They are used in electronics, car displays and home lights because they save power, last long and work well. But for long life and best work the power must be managed well. IC TPS61161A is special chip which is the LED driver for this job. It can […]
Exploring the L293D H-Bridge Motor Driver Circuit
L293D is small chip which control speed and direction of DC and stepper motors. People use it a lot in robots and automation. It uses H-bridge system to change motor direction by flipping voltage. Chip can run 2 motors at same time. Each motor get up to 600 mA current which is good for small […]
Designing a Simple 7W LED Bulb Circuit
LED lights last long and use less power so more people like them now. This article for Designing a Simple 7W LED Bulb Circuit shows how to make and use a 7W LED bulb circuit. Parts needed for this circuit are 230V AC power, MOV, capacitors, resistors, bridge rectifiers, Zener diodes. Be careful! This circuit […]
Simple Adjustable Brightness Control Circuit for LEDs
LEDs (light-emitting diodes) are used in many things. They are strong, work well and can be used in different ways. In things like decoration or signals, changing LED brightness is important. This Simple Adjustable Brightness Control Circuit for LEDs uses BC547 NPN transistor, resistors, one preset (variable resistor) and a white LED to change brightness. […]
Building a Simple Pulse Frequency Counter Circuit with Arduino
Pulse frequency counter count signal in hertz (Hz). It is an important tool in electronics. Now Arduino and other microcontroller make counter easy and cheap. This article for Simple Pulse Frequency Counter Circuit with Arduino show how to make this easy circuit with few parts. We have used IC 555 to make pulse, IC 7809 […]