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  • Multi level power supply with 78xx series

    2015-03-24 11:31:38117

    This is an electrical circuit to supply DC power positive and negative. It also has multiple power levels as well. The equipment it easy to buy and aff...

  • Reduced Power Infra-Red Diode Driver

    2015-03-24 11:17:4268

    View Full Size Image View Original Datasheet Infra-Red LEDs can be used as continuously operating beams of light. Sensing a break in the path of light ...

  • SYNCHRONOUS_SAWTOOTH_FOR_PDM_TELE_METRY

    2015-03-24 11:11:14101

    Circuit generates highly linear ramp that is reset to zero by each clock pulse. When ramp exceeds analog value of unknown input voltage, pulse is termi...

  • Simple 12 Volt to 9 Volt DC-DC Converter

    2015-03-24 11:11:08122

    This DC-DC Converter schematic diagram is very simple with few components, making it easy to build. It can convert 9 volt DC voltage from 12 VDC source...

  • Power Path Management Battery Charger

    2015-03-24 11:07:5972

    Powering the system is required by many applications while charging the battery simultaneously. Interaction between the system and charger may result i...

  • Low Power Regulated DC to DC Converter

    2015-03-24 10:50:0879

    This Low power regulated dc to dc converter circuit obtained by adding a flyback circuit to a square wave oscilator. This dc dc converter circuit opera...

  • INPUT_ATTENUATOR

    2015-03-24 10:35:16122

    Low-distortion automatic input attenuator for modern communication receiver is activated at input signal levels above 100 μV. For range of 1-30 MHz, u...

  • REGULATOR_FOR_PORIABLE_CRO

    2015-03-24 10:30:36109

    Maintains constant 10-v output from 12-v nickel-cadmium battery, from external d-c voltages up to 35 v, or from 117-v a-c line. Includes battery-chargi...

  • PC power supply failure

    2015-03-24 10:17:06122

    Problems associated with power supplies The schematic diagram come from circuit: PC Power Supply Problem power supply. Go to that page to read the expl...

  • Micropower MOSFET Drivers

    2015-03-24 10:12:3492

    The LTC1155, dual micropower MOSFET driver, generates12V from a 5V rail to fully enhance logic-level Nchannelswitches with no external components requi...

  • LED 12 Volt Lead Acid Battery Meter

    2015-03-24 10:08:3290

    In the circuit below, a quad voltage comparator (LM339) is used as a simple bar graph meter to indicate the charge condition of a 12 volt, lead acid ba...

  • Adjustable Current Limit For Dual Power Supply

    2015-03-24 10:07:1889

    This current-limiting circuit, shown in this example as part of a small bench power supply, could in principle be used in conjunction with any dual-rai...

  • VOLTAGE_PROGRAMMABLE_CURRENT_SOURCE

    2015-03-24 09:37:34119

    This circuit is a programmable current source in which op amp LT1102 (Linear Technology Corp.) is used in conjunction with LT1006 op amp. A1, biased by...

  • Soft Start For Switching Power Supply(LM2574)

    2015-03-24 09:34:18103

    This article briefly describes the Soft Start For Switching Power Supply (LM2574). This principle is easy to understand, but also very practical. Depth...

  • Automatic Room Power Control

    2015-03-24 09:27:2577

    An ordinary automatic room power control circuit has only one light sensor. So when a person enters the room it gets one pulse and the lights come on. ...

  • PULSE_HEIGHT_DETECTOR

    2015-03-24 09:23:3072

    Photodiode held against screen of scope unbalances bridge when illuminated by pulse on screen. Bridge output can control another scope for displaying a...

  • GASFET_POWER_SUPPLY

    2015-03-24 09:19:4897

    Suitable for use with the GASFET doubler In this text, and other similar applications, this supply delivers + 3 Vdc and 0 to -3 Vdc bias....

  • Power Supply For Amplifiers

    2015-03-24 09:09:28135

    For the 60W amplifier, a nominal (full load) supply of +/- 35V is required, so a 25-0-25 secondary is ideal - however, see Updates, below. The circuit ...

  • CONSTANT_CURRENT_SUPPLY

    2015-03-24 09:08:59148

    Used to measure resistivity of semiconductors rapidly and accurately. Switch gives choice of 0.5, 5, and 50 ma. Values are read from dial settings rath...

  • TD4919 switch regulator power supply circuit diagram compose

    2015-03-24 09:05:4894

    The AC input voltage of the circuit is 185~240V, DC output voltage is 10V, output current is 5A. The features are: It has the function of monitoring ...

  • LT3758 12 volt power supply

    2015-03-24 08:59:41283

    Power Supplies Circuits This power supply circuit is designed based on the LT3758 current mode, DC DC controller which is capable of generating either ...

  • Compact Power Factor Controller CIRCUIT (L4936EH)

    2015-03-24 08:58:2074

    This article describes the Compact Power Factor Controller CIRCUIT (L4936EH). The content is very simple, very helpful. Components in this article can ...

  • Piezoelectric 3.3V Power Supply with LDO Post Regulator for

    2015-03-24 08:57:0275

    View Full Size Image View Original Datasheet The LTC3588-1 integrates a low-loss full-wave bridge rectifier with a high efficiency buck converter to fo...

  • The power circuit of CASPER 1489 monochrome monitor

    2015-03-24 08:51:4264

    ...

  • Micropower Multiplier/Divide

    2015-03-24 08:43:1368

    View Full Size Image View Original Datasheet The X, Y, and Z input amplifiers servo to control the emitter current of transistors according to the appl...

  • ADP1261 3 to 12 volts converter

    2015-03-24 08:43:01143

    This power supply circuit diagram is based on the ADP1261 fixed-frequency, pulse-width modulation (PWM), current-mode, step-up converter controller. It...

  • DIODE_CMOS_STABILIZER

    2015-03-24 08:33:3693

    The simple diode network can stabilize the voltage supplied to CMOS circuitry from a battery. D1 and D2 must have a combined forward-voltage drop of ab...

  • THYRATRON_CONTROLS_CHARGER_RECTIFIER

    2015-03-24 08:16:4790

    Automatic regular turns charger off when battery voltage exceeds predetermined value, and turns charger on again automatically at any desired lower vol...

  • Automatic Solar Power Supply Circuit

    2015-03-24 08:11:4075

    ...

  • Voltage Stabilizer Circuits with LDR (Photoresistor)

    2015-03-24 08:11:0870

    Voltage Stabilizer Circuit with LDR (Photoresistor)This is a very interesting a.c. voltage stabilizer that uses a LDR or photoresistor to stabilize an ...

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