This article shows how to make Simple Battery Eliminator Circuits using 3 Methods with many useful features. When we need steady DC power for devices then battery eliminator is very useful. There is no need of normal batteries. These circuits change AC from transformer to DC power for electronics. It is very helpful for testing, […]
Power Supply Circuits
Simple Positive Voltage to Negative Voltage Converter Circuit
This article for Simple Positive Voltage to Negative Voltage Converter Circuits shows how to change positive DC voltage to negative DC voltage using special converter circuit. This circuit is useful for many electronic things. One famous and easy to use chip is IC 555 which is strong and works well. IC 555 are mostly used […]
Simple Current Limiting Circuit using IC LM317/LM338
Current going to load is controlled by Simple Current Limiting Circuit using ICs LM317/LM338. These chips also work as current limiters if set properly. Power comes in as Vin. LM317/LM338 have 3 pins: input, output and adjust. Vin goes to input pin. Output pin (Vout) goes to load and gives limited current. Circuit Working: Parts […]
Boost Converter Circuit using IC 555
Boost Converter Circuit using IC 555 take low DC voltage and makes high DC voltage and is used for IC 555. IC 555 make PWM signal to control other parts. Other parts used are IRFZ44N, inductor, diode, resistor and capacitor. Circuit Working: Parts List: Component Type Description Quantity Resistors 1k ohm 1/4 watt 1 Potentiometer […]
12V SMPS Driver Circuit for LED Strip
12V SMPS driver change big AC power from 110V or 220V into small 12V DC. Circuit is good for LED strip light. In this DIY we make cheap and strong LED driver. It can power full 12V LED strip with 100 or 200 LEDs. Important points to follow: Circuit uses 230V AC direct which is […]
Simple Non-Contact 220V AC Detector Circuit using IC 555
Playing with electric wire is risky especially if we do not know electronics. Wrong use of electricity can be dangerous. So better to be safe before touching wire and first check if some electricity with leakage voltage is still there. This article for Simple Non-Contact 220V AC Detector Circuit using IC 555 show how to […]