Power supply regulator +15V -15V 1A by IC 7815 & 7915
      When I builds the circuit Pre tone control by IC LF353 the finished , but can not be usable. Because of it wants a power supply +15V GND -15V at 500mA current. I pairs then builds the group Dual...
View ArticleMy first Variable DC Power Supply 1.2V to 30V 1A by LM317
If you are beginner in electronics and you want to have a great power supply. This project is design for you. It can supply voltage 1.2V to 30V at all range is 1A. New update Please read below this...
View ArticleDiy digital voltmeter panel meter 0-50V
Friends interested The cheap digital voltmeter using CA3162 and CA3161 very much. But cannot buy ICs since it is very ancient. Now there is digital voltmeter panel meter that easy to use as Figure 1 is...
View Article1.2V-25V at 3Amp Adjustable Regulators using LM350T
This is a 3A adjustable regulators using IC-LM350T that look like In My first Variable DC Power Supply, but this high current higher than 3-Amp. Therefore they cause you can supply more any load...
View ArticleBest DC power supply 3Amp to adjust 1.2V-20V & 3V-6V-9V-12V
This is the high quality power supply to provide high current 3A. And still adjust voltage in steps from 3V, 6V, 9V, 12V. adjust voltage is continuous 1.25V to 20V. Using LM317T and 2N3055 are main...
View ArticleAdjustable AC voltage power supply, 0-30V 3A
When we experiment a AC power. We always use power transformer as source but it cannot adjust voltage though it have a adjustable form but them too expensive. This project so may a good way of us. This...
View Article12V to 5V 3A DC converter step down Regulator
My friend bought a digital camera that can take pictures and videos as well. But he tell that it have restrictions is available not long the battery runs out. He did use an external battery, but the...
View ArticleSimple DC to DC step up converter using TDA2822
This is a simple DC to DC step up converter circuit which can increase input voltage of 3-12 volts into 4.5-22 volts at current 1-300 mA. It use small audio amplifier IC as main and use principle...
View ArticleDC to DC step up converter using TDA2004 or TDA2005
We can increase the DC voltage from 6 volts to 12 volts. Or from 12 volts to 24 volts with a simple model of The DC to DC step up converter circuit with use TDA2005 or TDA2004 as main. This circuit is...
View ArticleClik here to view.
0-50V 3A Variable DC power supply
This regulator is circuit that adjust output voltage wide rage between 0-50V, and Also important is the overcurrent protection circuit at 3 Ampere. Which will immediately cut. The voltage regulation...
View ArticleBoost converter 5V to 12V
This circuit offers a variety of Buck DC to DC converters. Because as circuit increase voltage of 5 volts to 12 volts. This circuit is called Boost converter circuit. The primary circuit is shown in...
View Article12V battery to 5V 1500mA DC converter regulator
This is a 5V 1500mA DC regulator circuit. which is simple circuit using IC-7805 to fixed regulator 5 volts and TIP41-NPN power transistor to increase current up to 2A. Example experiment. I use the...
View ArticleAdjustment DC power supply 1.25-15V Max current 0.5 amp
This is power supply that have Voltage output fine the value has 1.25-15V. From by Output current that be valuable about 0.5 amp that 12V and 0.2 amp that 15V. When Volt , from 220V houses reach...
View ArticleThe first my ebook.
I am a freelance writer, published a book through the publisher. Later I do not sent the manuscript to the publisher. I like to write articles on their own websites, A independent high. But I still...
View ArticleSimple variable dc power supply 0-30V 2A for beginners
If you are beginners who want to use the simple variable DC power supply 0-30V 2A. This circuit is best for you. Because it has a few parts,small,and cheapest than others circuit that same power. The...
View ArticleAutomatic Reverse polarity switch by Relay.
This circuit is an automatic reverse polarity switch. If we apply DC voltage to a any electronic circuits in wrong polarity. It can be caused by too much current. You must waste time to reverse the new...
View ArticleIC regulator protector circuit when load short
Today I have a little idea is the ICs regulator protector circuit in a load short-circuit. We design for the 12 volts DC regulator only. For example: IC-7812, or others 12V power supplies. How it works...
View ArticleMultiples ways to increase the power supply current
If a DC power supply not enough for your job. The most cause come from the lower current of the transformer,which changing them is hard and expensive. This way maybe help you! Since the most...
View Article0-30V,0-2A adjustable voltage and current regulator
This is the 0-30V,0-2A adjustable voltage and current regulator that developed from the cheap adjustable 0-30V 2A Laboratory DC Power Supply project using LM723 is used widely, for a long time. This...
View ArticleCheap adjustable 0-30V 2A Laboratory DC Power Supply
This 0-30V power supply is the variable voltage Regulator at 2A max, by used IC-723 for control volt stable regulated. The 2N3055 power transistor for boost up current to 2 Amp. It suitable for general...
View Article