Simple LED Boost Driver Circuit with IC MP3302 chip is good boost converter for LED lights in many projects. It can light 27 LEDs in 9 groups and each group have 3 SMD 2835 LEDs. Battery are used in Lithium-ion. MP3302 IC is special because it gives steady current and control many LEDs together. IC […]
PWM Dimmer Circuit for 12V DC Lamp
This post is about PWM Dimmer Circuit for 12V DC Lamp which controls lamp brightness and saves energy. Main part of this circuit is IC 555 timer chip which make PWM signal. PWM signal change power to lamp by duty cycle. IC 555 timer works like astable multivibrator at 2.8KHz which is the is the […]
Light Controlled Switch Circuit using IC LM311 and LDR
This article talks about Light Controlled Switch Circuit using IC LM311 and LDR. It simple and very useful and it feel light change near it. We find this circuit in many place like automatic light, street lamp and security system. Main thing is voltage comparator with LM311 IC. LDR sees light and LM311 IC turns […]
IC 555 Timer Based Mini Flasher Circuit
IC 555 Timer Based Mini Flasher Circuit makes LED blink light with a set speed. This circuit often uses for signal, indicator and hobby projects. IC 555 timer work in astable mode to give pulses all the time. We can change blink speed with a potentiometer. The circuit power it with 6V battery or 6V […]
Simple Micro Flasher Circuit using IC CD 4093
Simple Micro Flasher Circuit using IC CD 4093 is easy way to make LED blink for many indicators. CD 4093 has four NAND Schmitt trigger gates inside. It runs on 6V battery and need few parts only which is very simple and good. Flashing happens because one NAND gate turn LED ON and OFF steady. […]
Simple Dark Sensor Circuit with Buzzer
Simple Dark Sensor Circuit with Buzzer is a very easy project to make. It detect no light and makes sound. It is uses in night lights, security and alarms. Circuit works with LDR, 555 timer and buzzer. Low light makes buzzer ON. This circuit runs on 9V battery which is small and handy. Circuit Working: […]