Looking for a simple 12 V LED string light flasher circuit for your next Christmas decoration project? Learn how easy it is to build a LED wig wag string light flasher using just a couple of transistors and few other passive components. LED Flashing String Lights for Decorating Homes A LED flasher schematic has also […]
12V
12V, 5 Amp SMPS Battery Charger Circuit
In this article we study a simple flyback based converter design which is implemented as an SMPS 12V, 5amp battery charger power supply, without using a iron core transformer. How it Works The proposed 12V, 5 amp smps battery charger circuit employs a flyback converter topology which results in the required smps based high current, […]
2 Compact 12V 2 Amp SMPS Circuit for LED Driver
In this post I will comprehensively discuss a 2 simple 12V 2 amp SMPS circuit using the IC UC2842. We study a 2 amp flyback design by evaluating various formulas, which provides the exact selection details for the transformer winding and the parts specifications. Design#1: Introduction The first design is based on the versatile IC VIPer53-E. […]
Make this 220V to 12V SMPS Using UC2842 IC
This UC2842 IC based SMPS design is simple, cheap and efficient kind of isolated power supply. We can use it in off-line stuff like AC-DC adapters, battery chargers and all those small power supplies. What is cool? It takes that high voltage AC then steps it down and then keeps input and output fully isolated […]
5V, 12V Buck Converter Circuit SMPS 220V
This step down buck converter will convert a 220V AC input from mains supply to 5V or 12V or 24V DC with 90% efficiency. The proposed buck converter is an SMPS circuit using the IC VIPer12A from STMicroelectronics. The circuit uses negligible number of external components yet is able to operate directly from mains AC input. The Buck […]
IC LM7912, -12V Negative Voltage Regulator Explained
In this post we are going to learn about one super old but gold IC called LM7912 or simply IC 7912. This one is not positive regulator like 7805 or 7812, but it is negative regulator which means it gives -12V output and not +12V. If you are making op-amp circuits or dual power supply […]