Like our previous post on Half Wave and Full Wave Voltage Doubler Circuit this post is about a full-wave voltage quadrupler power supply circuit. It converts low AC voltage into high DC voltage for example, 9V AC is converted into approximately 50V DC. Therefore, it multiplies the input voltage almost four times, so it is […]
Half Wave and Full Wave Voltage Doubler Circuit
In many electronic projects, we need a higher DC voltage, but sometimes transformer gives low AC voltage. For example, a 9V AC transformer is common, therefore, we use voltage doubler circuit and this increases voltage without using high voltage transformer. Besides increasing the voltage, this circuit also converts AC into DC. There are two types […]
Random LED Number Generator Circuit
This circuit is for simple Random LED Number Generator Circuit using IC CD4017 decade counter and IC CD4011 NAND gate. It works on 9V power supply and the LEDs in the circuit represent the numbers. When we press the switch, one LED remains ON, because the counter runs very fast and the final LED looks […]
AC Lamp Flasher Circuit using SCR
This circuit is AC Lamp Flasher using SCR which works directly on 230V AC mains. It is simple and is with low cost project so it is useful for decoration light, warning lamp and festival lighting. Basically, the circuit uses SCR for switching and it also uses RC timing network, because of that the lamp […]
Audio Controlled Mini AC Lamp Flasher Circuit using SCR
This article is about a simple and low cost project, which we call it is an Audio Controlled Mini AC Lamp Flasher circuit using an SCR. It works with audio signal, when music comes the lamp flashes and when sound increases the lamp glows more. So it follows the audio level for this the circuit […]
Transistor Based Mini Emergency Light Circuit
Electricity failure is common in many areas, so we need backup light. This Transistor Based Mini Emergency Light Circuit is simple and is with low cost. It uses few components only and it works automatically when power fails. Therefore, it is useful for homes and small offices and it is easy to build even for […]