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  • Hard Disk Switch(1N4148)

    2015-09-30 05:17:0767

    This article briefly describes the Hard Disk Switch (1N4148). Although this circuit is very easy to understand, but also very practical. Circuit elemen...

  • Switch De-Bouncer

    2015-09-29 21:05:1666

    Description This circuit will remove the transient spikes and contact bounces from a non-latching push button switch. Notes: Using a 555 timer as a mon...

  • LM2673 -5V 3A Switching Voltage Regulator

    2015-09-29 20:05:1971

    This is the DC switching regultor Voltage 5V at current 3A. It is make for digital circuit. The important part of the circuit is LM2673, it is 3A Step-...

  • How to build Sound Operated Switch

    2015-09-29 19:19:4463

    Circuit diagram Notes: This sensitive sound operated switch can be used with a dynamic microphone insert as above, or be used with an electret (ECM) mi...

  • Rotary electronic switch

    2015-09-29 12:15:2465

    Rotary switches electronic circuits, using a single switch choose a function of external control circuit has 9 positions.Work was, when the switch S1, ...

  • Touch on-off switch

    2015-09-29 10:18:1584

    A Touch On/Off Switch is desired, this circuit fills the bill. Two sensitive gate SCRs are interconnected, so that when one of the devices is turned on...

  • Zero crossing switch

    2015-09-29 04:49:3271

    When switching loads with the aid of a thyristor, a large amount of RFI can be generated unless some form of zero crossing switch is used. The circuit ...

  • Switchmode Constant Current Source(LM2575T)

    2015-09-29 00:00:01378

    This article briefly describes the Switchmode Constant Current Source (LM2575T). This principle is easy to understand, but also very practical. Depth u...

  • Remote Selection Video Switch

    2015-09-28 19:46:2388

    The A/B Switch circuit consists of three ICs and a handful of resistors. Two gates from a 4011 quad 2-input N AND gate (U1A and U1B) are configured as ...

  • 3A Switching Voltage Regulator based LM317HV circuit diagram

    2015-09-28 18:41:5097

    Above circuit diagram is a easy, simple and cheap switching voltage regulator which has capability to deliver adjustable voltage output range of 1.8V t...

  • Negative-Output Switching Regulator(LM2575 )

    2015-09-28 15:48:3661

    This article briefly describes the Negative-Output Switching Regulator (LM2575). This principle is easy to understand, but also very practical. Depth u...

  • Four-Digit Keypad-Operated Switch

    2015-09-28 15:24:3472

    Description This is a universal version of the Four-Digit Alarm Keypad. Ive modified the design of the output section - to free up the relay contacts. ...

  • Relay Switch Activated by Tone and Signal(LM741)

    2015-09-28 11:58:5772

    This article describes the Relay Switch Activated by Tone and Signal (LM741). The principle is very simple, very practical. The circuit components can ...

  • Variable Frequency Switch Mode Regulator (TL497)

    2015-09-28 10:00:12110

    This article describes the Variable Frequency Switch Mode Regulator (TL497). The principle is very simple, very practical. The circuit components can h...

  • Buck-Boost (Switch Mode) Regulator Provides 12V from 5-35V S

    2015-09-28 08:10:0969

    This article describes the Buck-Boost (Switch Mode) Regulator Provides 12V from 5-35V Supply (L7805ACV). The content is very simple, very helpful. Comp...

  • Programmable Switching 1.5A Current Source

    2015-09-28 07:35:0569

    View Full Size Image View Original Datasheet The LTC3600 is a high efficiency, monolithic synchronous buck regulator whose output is programmed with ju...

  • LA7016 - Electronic Switch IC

    2015-09-28 04:40:23158

    The LA7016 is Japans Sanyo produced a single two electronic switch integrated circuits, is a common, signal switching with the TV audio, music center a...

  • Nonvolatile STANDBY/ON Switch

    2015-09-28 02:57:0166

    STANDBY/ON switch below is appropriate for applications (industrial and telecom, for example) in which the circuitry must remember its state (STANDBY o...

  • Keypad-Operated Switch No.2

    2015-09-28 00:06:5365

    Description This is a simplified version of the Universal Keypad-Operated Switch. I have modified the design to reduce the complexity of the circuit - ...

  • Infrared switch circuit schematic presentation

    2015-09-27 23:07:2167

    This article describes an infrared switch circuit schematic presentation. The principle is simple there, we recommend that combine text carefully read ...

  • Sound Operated Switch Circuit

    2015-09-27 22:36:0165

    Sound Operated Switch Circuit Circuit diagram Notes: This sensitive sound operated switch can be used with a dynamic microphone insert as above, or be ...

  • Relay Type Switch Circuit Test in High-Voltage Impulse Gener

    2015-09-27 20:43:1762

    This kind of impulse generator simulates transient overvoltages on residential or industrial low-voltages AC power circuits (120 or 220V). And the foll...

  • HIP2100 Two Switch Forward DC Converter Circuit Diagram

    2015-09-27 10:09:5567

    There are applications which uses?HIP2100 half bridge driver such as Telecom Half Bridge Power Supplies, Avionics DC/DC Converters, Active Clamp Forwar...

  • DB-9 switch to flip betw1een tw1o serial ports (RS232)

    2015-09-27 08:29:2773

    This article describes the DB-9 switch to flip betw1een tw1o serial ports (RS232). The principle is very simple, very practical. The circuit components...

  • Relay timer switch

    2015-09-27 07:54:1266

    Relay Timer switch ??? Fig.1 ??????? ???? ????????????? ? ?????? ???????? ?? ????????? ??, ???? ?????? 100 ?????????????, ???????? ??? ???? RL1 ?? ????...

  • Proximity-switch

    2015-09-27 07:08:2766

    A 3-x -3-inch piece of circuit board, or similar size metal object which functions as the pick-up sensor, is connected to the gate of Ql. A 100-MD resi...

  • Signal Switches and Sample-and-Hold Circuits

    2015-09-27 06:44:3967

    Signal Switches A mechanical switch has the desirable characteristics of practically zero resistance when ON, and practically infinite resistance when ...

  • Switch-on delay circuit (2N4871)

    2015-09-26 12:44:05120

    This article describes the Switch-on delay circuit (2N4871). The principle is very simple, very practical. The circuit components can help you understa...

  • ICOM IC-720A Rotary Switch Replacement

    2015-09-26 00:13:39121

    A brief description: the counting pulse from J1-7 is filtered using 74HC00 NAND doors; it goes directly into the 4017, that start counting. The 4017 ou...

  • Extending Battery Life with Switching Regulator

    2015-09-25 19:57:0766

    A normal 9V battery would be considered as dead battery when the voltage falls below 7 Volts. With this switching regulator, a? lifetime of a 9V batter...

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