A capacitive dropper is one simple method used in some transformerless power supply circuits. In this method a capacitor is connected in series with the AC supply to limit the current going into the circuit. This calculator helps us to find the theoretical capacitor value according to the input AC voltage and required current. Capacitive […]
Transformerless
Transformerless IC 555 Inverter Circuit
The design showing below depicts a simple yet very effective 4 MOSFET n channel full bridge IC 555 inverter circuit. The 12 V DC from the battery is first converted into 310 V DC through a ready made DC to AC converter module. This 310 VDC is applied to the MOSFET full bridge driver for […]
3 Best Transformerless Inverter Circuits
As the name suggests, an inverter circuit that converts a DC input into AC without depending on an inductor or a transformer is called a transformerless inverter. Since an inductor based transformer is not employed, the input DC is normally equal to the peak value of the AC generated at the output of the inverter. […]
Transformerless AC Voltmeter Circuit Using Arduino
In this article I have explained how to make a transformerless AC voltmeter using Arduino. Making an analog voltmeter is not an easy task as to build one you must have good knowledge of physical quantities like torque, speed; which can be very difficult when it comes to their practical applications. By Ankit Negi But […]
Transformerless Voltage Stabilizer Circuit
In this post I have explained a simple circuit design which ensures a perfectly stabilized 220 V or 120 V mains voltage across the connected load, without using relays or transformers, rather by the use of accurately dimensioned and self adjusting PWM pulses. The idea was requested by Mr. Mathew. Warning: Circuits I have explained […]
Transformerless Constant Current LED Driver Circuit
In this post I have explained how just a single IC MBI6001 can be used as a transformerless constant current LED driver circuit for illuminating a chain of many LED in series. The MBI6001 series of ICs are designed to work with mains AC inputs and convert it into a lower voltage DC output which […]