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Automatic UPS system wiring circuit diagram (New Design Very simple) for Home or Office – Circuit Schematic
Automatic UPS system wiring circuit diagram (New Design Very simple) for Home or Office
This wiring circuit diagram is design for when you want to give supply to particular rooms in the home or office in the building in case of failing the power su...
Electrical Single Line Diagram - Part Two – Circuit Schematic
Electrical Single Line Diagram - Part Two
The single line diagram is circuit diagram where "one-line" is shown to represent three phases of a three phase power system. In addition to showing the ratings...
5V USB interface power supply / charger circuit – Circuit Schematic
5V USB interface power supply / charger circuit
The USB Charger power supply,should be used inMP3MP4 charger ,which input AC160-240V, 50/60Hz, rated output: DC 5V , 250mA (if you want long-term greater curren...
0-30V Stabilized Variable Power Supply with Current Control – Circuit Schematic
0-30V Stabilized Variable Power Supply with Current Control
This is high quality stabilized power supply circuit diagram. You will able to adjust the output voltage from 0 volt up to 30 volt DC. You also able to adjust t...
the old pc power supply circuit – Circuit Schematic
the old pc power supply circuit
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Nitrogen Laser High Voltage Power Supply – Circuit Schematic
Nitrogen Laser High Voltage Power Supply
The schematic of the power supply is shown below. It runs off standard household power of 120VAC 50/60Hz, and the output is adjustable up to 25kV or more. For.....
Flyback transformer tester circuit using 2SC828 – Circuit Schematic
Flyback transformer tester circuit using 2SC828
The circuit tests a flyback transformer of the televisions that the result is a simple, easy and cheap to build. One of my friends is TV repairman colors -.....
Easy 5V 10A switching regulator by L4970A – Circuit Schematic
Easy 5V 10A switching regulator by L4970A
Friends that seek 5V 10A power supply circuit small-sized and build easy. I begs for to advise this circuit. It is 10A switching regulator by use IC L4970A. The...
DC Power Supply 9 volt using TIP31 transistor – Circuit Schematic
DC Power Supply 9 volt using TIP31 transistor
DC Power Supply 9 Volt Regulator, that can give current get about 1 Amp arrive at 2Amp. I sees part already modify transistor TIP31 and part come to can be usab...
Mini UPS for DSL Modem and WiFi Routers – Circuit Schematic
Mini UPS for DSL Modem and WiFi Routers
This is a rough, simple and NOT a sophisticated solution by me, but works! You can not only power DSL / WIFi routers for HOURS but also any other appliance that...
30v 100Amp power supply – Circuit Schematic
30v 100Amp power supply
I am now looking to make a power supply adjustable cv 0-30v and would really like it to be adjustable cc as well. I have found various circuits for Cv, but very...
mcus for online ups – Circuit Schematic
mcus for online ups
With the increasing daily reliance on networked data systems, the need for failsafe backup of power supply systems is now essential. Uninterruptible power suppl...
Variable PSU – Circuit Schematic
Variable PSU
A variable power supply with adjustable voltage and current outputs made with the L200 regulator. Using the versatile L200 voltage regulator, this power s.....
USB Power Injector For External Hard Drives – Circuit Schematic
USB Power Injector For External Hard Drives
A portable USB hard drive is a great way to back up data but what if your USB ports are unable to supply enough juice  to power the drive A modified version o...
USB Fuse – Circuit Schematic
USB Fuse
Life in the 21st century would be almost unbearable without some of the computer peripherals that PC users now look on as essentials take for example th.....
Triple Power Supply – Circuit Schematic
Triple Power Supply
Inexpensive miniature transformers normally provide one or two secondary voltages, which is sufficient for generating a set of positive and negative suppl.....
Transformerless Power Supply – Circuit Schematic
Transformerless Power Supply
This circuit will supply up to about 20ma at 12 volts. It uses capacitive reactance instead of resistance; and it doesn t generate very much heat.The circ.....
Transformerless 5 Volt Power Supply – Circuit Schematic
Transformerless 5 Volt Power Supply
An increasing number of appliances draw a very small current from the power supply. If you need to design a mains powered device, you could generally choo.....
Switch For Switch-Free Power Supplies – Circuit Schematic
Switch For Switch-Free Power Supplies
Portable radios, CD-players and cassette recorders that can also be operated from mains power often do not have a mains power switch, but instead are swit.....
SMPSU With A Relay – Circuit Schematic
SMPSU With A Relay
Switched mode power supply units (SMPSUs) are popular but difficult to build oneself as well problematic when it comes to understanding their design princ.....