The AC to DC bridge voltage doubler is a simple power supply circuit that converts a low AC input voltage into a higher DC output voltage; for example, a 9 V AC input can produce approximately 18 V to 25 V DC, depending on the load and circuit components. Therefore, this circuit is useful when […]
Mini Projects
9V AC to 38V DC Voltage Tripler Circuit
This project is for simple 9V AC to 38V DC Voltage Tripler Circuit and it converts low AC voltage into higher DC voltage, also the input is 9V AC from transformer and the output is around 38V DC without load. Furthermore, it is easy to build as it uses common parts and therefore, it is […]
9V AC to 50V DC Voltage Quadrupler Circuit
Like our previous post on Half Wave and Full Wave Voltage Doubler Circuit this article explains a full-wave voltage quadrupler power supply circuit; the circuit converts a low AC voltage into a high DC voltage. For example, it converts 9 V AC into approximately 50 V DC. Therefore, the circuit multiplies the input voltage by […]
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 and also there are […]
AC Lamp Flasher Circuit using SCR
This AC Lamp Flasher using an SCR operates directly from the 230V AC mains, also it offers a simple, low cost design, making it suitable for decorative lighting, warning lamps and festival lighting. The circuit uses an SCR for switching and an RC timing network to control the flashing operation; as a result, the lamp […]
Audio Controlled Mini AC Lamp Flasher Circuit using SCR
This article explains a simple and low cost Audio Controlled Mini AC Lamp Flasher Circuit using an SCR. The circuit responds to an audio signal by flashing the lamp in sync with the music; as the sound level increases, the lamp glows brighter. So it follows the audio level, for this the circuit uses SCR […]





