Voltage current adjustable power supply circuit is based on LM723 voltage regulator IC, the power transistors used are 2 bd249 input voltage dc 40 volt dc 1volt 37volt voltage adjustment 40 mA 3 ampere current adjustment. Also, two pots are used for current adjustment, so precise adjustment can be made. . The regulated part of…
MAX1811 USB port on to recharge the battery produced an integrated very little material circuit can be established circuit charge status LEDs can be observed also 4.1 volts, 4.2 volts elections and 100mA 500mA charging current can be selected fed lipo li-ion battery charging circuit circuit eagle crafted with PCBs and schema files available MAX1811…
SMPS circuits usually open type cooling is very important in power supplies adapter or amateur field studies, so not a problem because it is spacious area has a large fleshy cooling fan deny use to make air circulation and so on. SMPS circuit for closed-type, but has a very fine calculations Below of various brands…
N555 to the one-in flash unit in a digital camera based on the modified MOSFET been supplemented with a simple control circuit to provide continuous light is provided Flash old camera and extracted the flash unit, but unfortunately part of the circuit went with the camera body, and I had to build a little clock…
TDA8138 Two Channel Regulator Circuit PCB printed circuit and schematic drawing of TDA8138 datasheet application prepared with eagle cad electronic drawing program. I used to wonder why they wouldn’t do this type of multi-output IC from time to time, but it wasn’t very popular or it didn’t come across to me.. TDA8138 features; Output current…
A search 9v to 12v converter circuit requester had a person which article do not remember was a bit late but certainly someone that would work for a circuit dc-dc converter circuit’s input voltage 9 … 13.8v between the output 13.8 volts (12 .12 v adjustable) 13.8 volt output with 1.68 amps can give Used…
A versatile circuit, ideal for technical services that do different mixed works, transformer etd29 winding directions used in the switching (smps) section, wire diameters are shown with pictures Quick charge for Nicad, NiMH, LiION, SLA and Lead Acid batteries and accumulators 1.2Volt, 2.4Volt, 3.6Volt, 4.8Volt, 6Volt, 7.2Volt, 8.4Volt, 9.6Volt, 12Volt, 14.4Volt. For SLA and Lead…
A complete 12v 6v battery charging system built on a PIC16F628A microcontroller, a very powerful 16.6 amps 2xlcd display with charge voltage, current and temperature can be observed (volt ampere with lcd display can give an idea for a simple measurement circuit for heat) source .asm .hex files prepared with software assembly language exists. The…
Sold in the market which is connected to the car’s cigarette lighter socket usb charger kit circuit input voltage of 24 volts to 12 volts 24v batteries used in larger vehicles use the phone, can be used to charge many devices as mp4 MC34063 Stepdown Converter Schematics Source made on site MC34063 contains several different…
19 pieces of white LEDs lamp (220v 1w) LEDs used directly without transformer 220nF 220v mains AC voltage of 400 volts (non-polar) and 4.7mf resistor capacitor 100uF 63 volt capacitor with the overthrown 1n4007 diodes are operated with the filtered and rectified by Transformerless 220V LED Lamp Schematic CAUTION 220v LED lighting has been working…