Owner: Power Supply Circuit URL:http://powersupplycircuit.blogspot.com/ Join Date: Fri, 31 Oct 2008 10:35:30 -0500 Rating:0 Site Description: Electronic Power Supply Schematic Circuits Collection Site statistics:Click here
Electronic Fuse 2008-07-07 06:18:23 This electronic circuit is adjustable electronic fuse that can be used to protect power supplies from short circuits or can be also used to limit the current usage. It can be adjusted for currents from 100mA up to 4.3A.Click for schematicParts List:R - 100Q1 - TIP3055 (heatsink required)Q2 - BC212 (PNP)C1 - 1nC2 - 100nLX - Coil Values:0.1 Ohm - 4.3A0.2 Ohm - 3.3A0.47 Ohm - 1.9A1 Ohm - 500mALX is a Read more:Electronic
Regulator Power Supply 0-30V 5A 2008-07-07 06:00:30 This electronic circuit is a power supply with voltage regulator 0-30V and 5A currenct. The active components are regulator IC LM723, operational amplifier CA3140 and power transistor 2N3055.Click for : schematic and Printed Circuit board (pcb)links : LM723, CA3140 and 2N3055 datasheetSource: elecfree.com Read more:Regulator
, Supply
Breakdown Voltage Tester 2008-07-07 05:33:35 An adjustable, DC, current-limited, breakdown voltage tester [BVT] -- also known as a high-potential tester, or "hi-pot" -- can be used for non-3destructively measuring the voltage withstanding ability of relays, capacitors, transistors and silicon rectifiers. A BVT can be used to test amplifier-tubes for the presence of gas, and oxide-cathode type [8877, et cetera] amplifier-tubes for the presenc Read more:Tester
, Voltage
Automotive Voltage Indicator 2008-06-29 22:49:40 This electronic circuit is a voltage indicator for automotive. Connecting this circuit to the battery of your vehicle, you will always know at a glance the approximate voltage available. An indication of battery voltage is useful to the motorist for monitoring the battery's capacity to deliver current, and as a check on the efficiency of the dynamo or alternator.Threshold voltages of the LEDs are Read more:Automotive
, Indicator
, Voltage
Salt Water Battery 2008-06-29 22:25:05 This electronic Circuit is a salt water battery to operate a single AA battery quartz clock. It ran for several months until I got tired of adding water to compensate for evaporation. The batttery consisted of 5 cells each producing about 300 millivolts. As I remember, I used 5 small olive jars filled with about a cup of water and a tablespoon of salt to create 5 cells in series each producing abo
Battery Equal Charge Indicator 2008-06-29 22:07:37 The circuit below illuminates an LED to indicate unequal charges between two 12 volt lead batteries. It can be used to verify that two batteries are connected in parallel or isolated since the LED will be off when the voltages are equal within a tollerance, or on if the voltage difference is greater than 100 millivolts.Three comparators and three voltage dividers are used to determine battery cond Read more:Equal
, Indicator
USB Li-On Battery Charger 2008-06-29 15:05:16 A USB port is a great power source for charging a single cell li-on battery. It is capable of supplying maximum 5.25V and 500 mA. The circuit above is a USB powered single cell li-on battery charger. LM3622 is used as the controller. This special purpose IC has a precise end-of-charge control and low battery leakage current about 200nA.Source Read more:Charger
+5 Switching Regulator With LM2575 2008-06-29 14:15:23 This switching regulator used LM2575-5.0. You can make the stable voltage by using the 3 terminal regulator like LM317. However, because the output electric current and the inputted electric current are the same approximately, the difference between the input electric power (The input voltage x The input electric current) and the output power (The output voltage x The output current) is consumed a Read more:Regulator
, Switching
Appliance Priority Switch 2008-06-29 05:28:51 Here in Italy, the amount of mains power for most households is limited to 3 kW. With an hairdryer taking as much power as 1900W, I must check not to exceed the maximum power rating every time I switch on an electric appliance. Failing to do it may result in an unplanned walk out of the home, to restore the mains circuit breaker switch.I use this priority switch to automatically remove power from Read more:Appliance
Appliance Status Monitor 2008-06-29 05:25:02 This simple circuit lights an LED when the connected circuit draws more than 3 A ac. At 220 volts, this means something more than 600W.Replace the LED with an optocoupler and connect it to the PC serial or parallel port to monitor when an appliance or an industrial equipement is working (the output is a square wave at mains frequency)The amperometric transformer (TA) on my prototype is a 200:1, 5A Read more:Appliance
, Monitor
, Status
Simple Battery Charger For Car 2008-06-29 03:51:26 This battery charger circuit uses a transformer, two diodes, a capacitor and an ampere meter. To charge a battery just connect the + and - terminals of the circuit to the corresponding terminals of the battery.When the battery is not charged, the ampere meter reading shows 1-3 amps. When the battery is fully charged the ampere meter reads Zero or nearly zero, after which the battery should be rem Read more:Charger
, Simple
Power Inverter 12V To 120V 2008-06-29 03:51:12 This power inverter can be used to run a TV, stereo or other appliance while on the road or camping? It takes 12 VDC and steps it up to 120 VAC. The wattage depends on which tansistors you use for Q1 and Q2, as well as how "big" a transformer you use for T1. The inverter can be constructed to supply anywhere from 1 to 1000 (1 KW) watts.Part List:C1, C2 - 68 uf, 25 V Tantalum CapacitorR1, R2 - 10 O
ATX PC Power Supply 200W 2008-06-29 03:50:54 This PC power supply circuit uses chip TL494 from DTK Product. Similar circuit is used in the most power supplies with output power about 200W.Device use push-pull transistor circuit with regulation of output voltage.Line voltage goes through input filter circuit (C1, R1, T1, C4, T5) to the bridge rectifier. When voltage is switched from 230V to 115V, then rectifier works like a doubler. Varistors Read more:Power Supply
, Supply
A Simple Inverter for Fluorescent Lamps 2008-06-29 03:50:33 This inverter is very easy to construct, reliable, and even powerful enough to light up a 15W fluorescent tube (if you cool your transistor well). The only hard-to-find piece of this baby is the so-called yellow inverter transformer. It's a miniature high frequency transformer that has a 25mm x 20mm x 5mm ferrite core, 30 turns of primary, 15 turns of feedback, and 250 turns of secondary all conce Read more:Fluorescent
, Lamps
, Simple
Laptop Power Supply Adaptor 95W 2008-06-29 03:50:18 The laptop adapter described here plugs into a car cigarette lighter socket and produces a 19V nominal output voltage adjustable by + - 0.5V. The input voltage range is from 9.2V to 15V and the output voltage shows good regulation even with large fluctuations of the input voltage. The output can suply 5A continuosly with brief excursions up to 10A.The power semiconductor heatsinks are dimensioned Read more:Adaptor
, Laptop
, Supply
LED Voltage Indicator 120 - 240 VAC 2008-06-29 03:49:38 This circuit, designed on request, has proven to be useful to indicate when the voltage in a power supply line is changing from 120V to 240Vac. It can be used in different circumstances and circuits, mainly when an increase in ac or dc supply voltage needs to be detected.D3 illuminates when the line voltage is approaching 120V and will remain in the on state also at 240V supply. On the other hand, Read more:Indicator
, Voltage
Privacy Policy 2008-06-10 07:02:51 Privacy Policy
for Power Supply CircuitIf you require any more information or have any questions about our privacy policy, please feel free to contact us by email at ecircuits@telkom.net.At Power Supply Circuit Blog, the privacy of our visitors is of extreme importance to us. This privacy policy document outlines the types of personal information is received and collected by Power Supply Circuit B Read more:Privacy
, Privacy Policy
LM138/LM338 5A Adjustable Regulators 2008-11-14 08:37:51 The LM138 series of adjustable 3-terminal positive voltage regulators is capable of supplying in excess of 5A over a 1.2V to 32V output range. They are exceptionally easy to use and require only 2 resistors to set the output voltage. Careful circuit design has resulted in outstanding load and line regulation—comparable to many commercial power supplies. The LM138 family is supplied in a standard Read more:Regulators
Variable Regulated Power Supply 2008-10-31 12:33:53 This is a simple regulated power supply, but low-ripple power supply, and an excellent project if you're starting out in electronics. It will suit your needs for most of your bench testing and prototype applications.
The output of power supply is adjustable from 1.2 volts to about 30 volts. Maximum current is about 1.5 amps which is also sufficient for most of your tinkering. It is relatively ea Read more:Power Supply
, Supply
, Variable
Regulated Power Supply LM317 2008-10-24 22:37:14 The following power supply circuit uses IC LM317T. This Regulated power supply is suitable for using with Mosfet audio power amplifier 18W and Audio Preamplifier with Tone Control.
A very good and powerful Regulated Power Supply
section was implemented by simply adding a PNP power transistor to the excellent LM317T adjustable regulator chip. In this way this circuit was able to deliver much more
13,8 Volt 30A Power Supply 2008-10-03 22:22:05 Here's power supply with maximum current 30 Ampere with output voltage 13.8 Volt.
For Power supply parts list, see the circuit schematic.
For Supply
.htm">Power Supply
Cooling use large heatsink for 2N3055 power transistor.
Source:
13,8 Volt 12A Power Supply 2008-09-26 12:34:21 This power supply circuit has maximum current 14 Ampere with output voltage 13.8 volt trimmed by P1. Remember to isolate the transistors from the chassis/radiator of power supply box! This is very important!
To prevent overheat of power supply heatsink, use a radiator (heat sink) of appropriate size and surface area; insulating and heat-conducting spacer or at least a thin mica; hot adhesive and Read more:Power Supply
, Supply
13,8 Volt 20A Power Supply 2008-09-26 12:30:02 This power supply circuit has maximum current 22 Ampere with output voltage 13.8 volt trimmed by P1. Remember to isolate the transistors from the chassis/radiator of power supply box! This is very important!
Part list for 20 Amp BDX33-based power supply:
2 x 15 volt 12+ amps
2 times 3 MR750 (MR7510) diodes (MR750 = 6 Ampere diode) or 2 times 5 1N5401 (1N5408) diodes.
F1= 2 Amp
F2= 25 amp
R1= 2k Read more:Power Supply
, Supply
Regulated Power Supply 0-24V 2 Ampere 2008-09-26 12:22:21 Power supply circuit for output voltage 24V with maximum current 2 Ampere. Suppose you want a voltage regulatable max 15 Volt maximum 3A, then you only need to change Zener Diode (ZD) and the transformer to one of 15 volt.
Power Supply
parts list :
T1=BD135,2N2219
T2=2N3055 (With Heatsink)
R1=820 (2W)
R2=2K7
P1=4K7
ZD=24V/5 Watt
C1,C5= 100nF
C3=4700uF/50V
C4=47uF/50V
C6=100uF/24V
F1=2A Fuse
D1,
Regulated Power Supply 0-18V 4 Ampere 2008-09-26 12:21:43 This circuit is power supply with voltage and current regulatable, with maximum current 4 Ampere for voltage range 0-18 Volt. Final power is composed by two of 2N3055.
P1 sets maximum current of power supply, if do not need or want to be able to decrease amperage, then you can remove P1 and connect P2 to the 680 Ohm resistor. P2 regulates output voltage between 0 and 18 Volt DC. P1 trims to cal Read more:Supply
Stabilized Adjustable Power Supply LM337 2-30V 10A 2008-12-15 20:42:09 Here's an adjustable power supply that is a positive tension. But we use a negative voltage stabilizer. The circuit is something else but it has a big advantage. We now have the final transistor whose Collector often to the house is not to isolate the cooling plate!.
We can now as the transistor to the closet wall plates and screws without insulation vans. This makes the construction of this pow Read more:Power Supply
, Stabilized
, Supply
Stabilized Power Supply With Short Circuit Protection 2008-12-14 10:51:43 Here is stabilised power supply with short circuit protection. It's an efficient 4-stage stabilized power supply unit for testing electronic circuits; and it provides well regulated and stabilized output, which is essential for most electronic circuits to give proper results. The circuit provides an audio- visual indication if there is a short circuit in the PCB under test, so the power supply to Read more:Circuit
, Protection
, Short
, Stabilized
, Supply
High Voltage Power Supply with Low Current 2008-11-25 01:26:38 The following power supply ciruit is a high voltage power supply. It is a very useful source which can be effectively used in many applications like biasing of gas-discharge tubes and radiation detectors etc. Such a power supply could also be used for protection of property by electric charging of fences.
The current requirement of power supply is of the order of a few microamps. In such an appl Read more:Current
, High Voltage
, Power Supply
, Supply
, Voltage
ATX PC Power Supply 200W 2008-11-25 01:19:50 Here's a wiring diagram of PCs power supply of DTK company. This power supply has ATX design and 200W performance. It uses chip TL494. Similar circuit is used in the most power supplies with output power about 200W.
This ATX power supply device use push-pull transistor circuit with regulation of output voltage. For deatail see the following circuit
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