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Blog Details for "Circuit Project Electronic"
Circuit Project Electronic Circuit Project Electronic power supply, power amp, Circuit TV, electronic control, battery chart, lighting, basic electronic Articles
Power Supply derives 5 and 3.3V from USB port
2007-09-07 18:32:00 Design Ideas / The circuit in Figure 1 derives its power from a USB port and produces 5 and 3.3V supply rails for portable devices, such as digital cameras, MP3 players, and PDAs. The circuit allows the port to maintain communications while, for example, charging a lithium-ion battery. IC2 boosts the ... More About: Power , Port , Switching regulator
LM3876 - High-Performance 56W Audio Power Amplifier with Mute
2007-09-07 18:26:00 The LM3876 is a high-performance audio power amplifier capable of delivering 56W of continuous average power to an 8 load with 0.1% THD+N from 20Hz-20kHz. The performance of the LM3876, utilizing its Self Peak Instantaneous Temperature (°Ke) (SPiKe?) protection circuitry, puts it in a class above discrete and hybrid amplifiers by providing an inherently, dynamically ... More About: Power , Audio , Performance , High , Perform
+12 Volt Supply with TIP31,2N3904
2007-09-07 17:28:00 This power supply is not designed to use the prefabricated IC voltage regulators, even though such regulators do exist. The 7812 and 7912 ICs are quite capable of providing regulated +12 volt and -12 volt outputs, respectively. However, we have two problems with doing it this way. First, each regulator provides an output voltage accurate ...
Constructing the -12 Volt Supply
2007-09-07 16:56:00 The -12 volt power supply is not required for all possible analog circuits; many require only the +12 volt supply you have already built and tested. However, a number of analog circuits do require power supplies of both polarities so that their inputs and outputs can handle and deal with both positive and negative voltages. ...
Dual Power Supply +/- 15V with 7815,7915
2007-09-07 15:52:00 In this circuit, the 7815 regulatates the positive supply, and the 7915 regulates the negative supply. The transformer should have a primary rating of 240/220 volts for europe, or 120 volts for North America. The centre tapped secondary coil should be rated about 18 volts at 1 amp or higher, allowing for losses in the ... More About: Power , Dual
LED or Lamp Pulser with IC LM358
2007-09-07 13:49:00 Astonishing effect 4.5V supply Parts: R1,R2___________4K7 1/4W Resistors R3_____________22K 1/4W Resistor R4______________2M2 1/4W Resistor (See Notes) R5_____________10K 1/4W Resistor R6_____________47R 1/4W Resistor (See Notes) C1______________1µF 63V Polyester Capacitor D1_____________5mm. Red LED (See Notes) IC1__________LM358 Low Power Dual Op-amp Q1___________BC337 45V 800mA NPN Transistor This circuit operates a LED in pulsing mode, i.e. the LED ... More About: Lighting , Lamp , Puls , Pulse
Digital Step-Km Counter with IC 4026,4024
2007-09-07 13:44:00 Max. range: 9,950 meters with two digits Slip it in pants’ pocket for walking and jogging Parts: R1,R3____22K 1/4W Resistor R2________2M2 1/4W Resistor R4________1M 1/4W Resistor R5,R7,R8__4K7 1/4W Resistor R6_______47R 1/4W Resistor R9________1K 1/4W Resistor C1_______47nF 63V Polyester Capacitor C2______100nF 63V Polyester Capacitor C3_______10nF 63V Polyester Capacitor C4_______10µF 25V ... More About: Digital , Step , Counter
LM2678 DC to DC step down voltage regulator.
2007-09-07 13:31:00 LM2678 (5A)DC to DC step down voltage regulator.(Switching power supply regulator) Wide input voltage 8Vdc to 40Vdc. Part number: - LM2678-3.3 (3.3Vdc output) - LM2678-5.0 (5Vdc output) - LM2678-12 (12Vdc output) - LM2678-ADJ (1.2Vdc to 37Vdc output) Component list - 45uF 50V electrolytic capacitor - 0.47uF - 6TQ045S high speed schottky diode - Output 100V electrolytic ... More About: Switching regulator , Step , Voltage , Volta
dual power supply 3V,5V,6V,9V,12,15V with LM317,LM337
2007-09-06 18:45:00 Here is circuit dual power supply 3V,5V,6V,9V,12,15V 1A and -3V,-5V,-6V,-9V,-12V,-15V 1A Use IC LM317 and LM337 ,Control Voltage Output by S2 For +Vout ,S3 for -Vout Read detail more in circuit. LM317, LM337, Power supply circuit, power supply regulatorShare This More About: Dual
3-30 V/2.5 A Stabilized power supply with LM723 and 2N3055
2007-09-05 20:17:00 This is a very useful project for anyone working in electronics. It is a versatile power supply that will solve most of the supply problems arising in the everyday work of any electronics work shop. It covers a wide range of voltages being continuously variable from 30 V down to 3 V. The output current ... More About: Power
LM383 Power Amplifier OTL 5.5W For Car
2007-09-05 20:07:00 This is CAR Power Amplifie, It use for Car (Good Idea). Use IC LM383 OTL Amp output 5.5W at spk 4 OHM. Volt supply 12V-14.4V. Car Cassette, car power amplifier, OTL AMP, Power Amplifier Share This
LM390 MiNi Intercom
2007-09-05 19:58:00 Here is Intercom circuit,It Very easy Circuit. Use IC LM390 for Amplifier Sound Form Speaker or Mic. Control S1a change Talk and Listen. See to Detail in Circuit. Audio Alarm, audio alarm, basic electronics, Communicator , Headphones Share This More About: Mini
7824 Single Power Supply 25V 2A with IC 7824 and TIP2955
2007-09-05 17:13:00 Source: http://schematics.blogspot.com/2004/10/si ngle-power-supply.html This circuit uses a PNP Power Transistor TIP2955, you can use any other according to your current and voltage requirement. Look at R2 a 10 Ohm resistor, when the current in your load to the power supply is less than 70mA the voltage across R2 is less than 10E * 70mA = 700mV right. The base ... More About: Single
LM317 Linear power supply Regulator selector 1.5V,3V,4.5V,5V,6V,9V 1.5A
2007-09-04 16:56:00 This is circuit Linear power supply Regulator, Use IC LM317 ( hot ic regulator) it Adjustable Voltage Output. Control By Sele ct or SW, so Output Voltage 1.5V , 3V,4.5V,5V,6V,9V and 1.5A All Volt out. Detail See on circuit image. LM317, Power supply circuit, power supply regulatorShare This More About: Elector
L200 Variable Power Supply 3 to 15 volts 2Amp
2007-09-04 16:20:00 Using the versatile L200 voltage regulator, this power supply has independent voltage and current limits. The mains transformer has a 12volt, 2 amp rated secondary, the primary winding should equal the electricity supply in your country, which is 240V here in the UK. The 10k control is adjusts voltage output from about 3 to 15 ... More About: Power
Variable Dual Lab Power Supply by LM317 and LM337
2007-09-04 16:10:00 Variable Dual Lab Power Supply by LM317 and LM337 Having just built your new masterpiece, it is usually with great trepidation that one applies power. There are few things quite so disheartening as seeing your creation “go up in smoke” just because of a simple mistake. The easiest way to avoid this is to have a power ...
Op amp makes precise 9V-battery splitter
2007-09-04 16:05:00 Alkaline 9V batteries are ideal for many portable, handheld applications, because they have 650 mAhrs of capacity, operate as low as approximately 6V at the end of their ... More About: Battery , Split , Litt , Splitter , Reci
-12V to -5V/400mA Regulator Ensures Sequencing With 5V Rail
2007-09-04 15:18:00 The circuit in Figure 1 steps down a nominal -12V to a regulated -5V. It allows -5V to come up only after a separately regulated +5V has come up, and if the +5V collapses, it automatically shuts down the -5V. This is useful in ±5V supplies for A/D and D/A converters, which often require such ... More About: Rail
XTR106: 4-20mA Current Transmitter with Bridge Excitation And Linearization
2007-09-04 05:54:00 The XTR106 is a low cost, monolithic 4-20mA, two-wire current transmitter designed for bridge sensors. It provides complete bridge excitation (2.5V or 5V reference), instrumentation amplifier, sensor linearization, and current output circuitry. Current for powering additional external input circuitry is available from the VREG pin. The instrumentation amplifier can be used over a wide range of ... More About: Bridge , Citation , Mitt , Mitte
Variable DC Power Supply with 2N3055
2007-09-03 19:05:00 Voltage range: 0.7 - 24V Current limiting range: 50mA - 2A Device purpose: A Variable DC Power Supply is one of the most useful tools on the electronics hobbyist’s workbench. This circuit is not an absolute novelty, but it is simple, reliable, “rugged” and short-proof, featuring variable voltage up to 24V and variable current limiting up to 2A. ...
LM390 Bridge power Amplifier BCL 2.5W
2007-09-03 18:35:00 This is circuit LM390 Bridge power Amplifier BCL 2.5W. Supply voltage +6V, Output spkr 4OHM. R6 for adj Volume, R7 Adj Balane. BCL Amp, car power amplifier, Power AmplifierShare This
LM390 power Amplifier OTL 1W
2007-09-03 18:26:00 LM390 power Amplifier OTL 1W, Supply Voltage 6V, Output SPKR 4OHM. car power amplifier, Power AmplifierShare This
AM portable radio receiver by ZN414 IC
2007-09-03 18:12:00 Circuit : Andy Collinson Email: anc@mitedu.freeserve.co.uk Description: An AM portable radio receiver made from the ZN414 IC. The ZN414 ic has now been replaced by the MK484 which is identical in performance and pinout. Notes: Designed around the popular ZN414 IC this receiver covers the medium wave band band from approximately 550 to 1600 KHz with the values shown. The ... More About: Radio , Portable , Receiver , Radio Frequency , Adio
Basic UPS Power Supply with 7805
2007-09-03 17:20:00 This circuit is a simple form of the commercial UPS, the circuit provides a constant regulated 5 Volt output and an unregulated 12 Volt supply. In the event of electrical supply line failure the battery takes over, with no spikes on the regulated supply. This circuit can be adapted for other regulated and ... More About: Power , Basic
2W Switching Power Supply with 2N3053
2007-09-03 17:05:00 In this small switching power supply, a Schmitt trigger oscillator is used to drive a switching transistor that supplies current to a small inductor. Energy is stored in the inductor while the transistor is on, and released into the load circuit when the transistor switches off. The output voltage is dependent on the load resistance ... More About: Power , Switching , Witch
TDA2040 Power Amplifier OCL Stereo 20W+30W
2007-09-03 16:34:00 This is Circuit TDA2040 Power Amplifier OCL Stere o 40W+40W Suppy Volt+18V,-18V , Out put for Speaker 8OHM. OCL AMP, Power Amplifier, TDA2040Share This
A Self-Contained ?67.5 volt B Battery? for Portables
2007-09-03 16:20:00 This article describes the construction of an AA battery powered 67 1/2 volt “battery”. This new rechargeable “B battery” is slightly smaller than the original Eveready 467 battery and is the ... More About: Battery , Portables
250 W S.M.P.S. with Power FETs (link)
2007-09-03 15:59:00 Experiments with the PC power supply encouraged me to produce an “improved” design. Like the original design, the new power supply is also a forward converter with a half-bridge topology. The differences to the modified PC power supply consist of the following items: 1) two power FETs are used instead of bipolar transistors as power ... More About: Power , Link , Switching regulator
LM2585 - SIMPLE SWITCHER 3-Amp Flyback Regulator(link)
2007-09-02 18:59:00 The LM2585 series of regulators are monolithic integrated circuits specifically designed for flyback, step-up (boost), and forward converter applications. Link switching power supplyShare This More About: Simple , Witch
Power Supply 13.8V 30-40A with LM723 and BUZ24 or IRF150
More articles from this author:2007-09-02 18:39:00 This is the primary Power Supply for my Amateur Radio Shacks transceiver equipment. The Power Supply is build around the LM723 controller and four BUZ24 (or IRF150) power N-Channel FET transistors. FET transistors are used because of the simplicity of controlling the current through these transistors, it’s simply voltage controlled, and because of the low ... 1, 2, 3, 4, 5, 6, 7 |
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