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  • Sound-Activated Switch

    2015-09-22 17:08:2176

    This circuit provides either latched switching or timed switching. U1A and UlB provide audio amplification from the microphone. U2 is a retriggerable m...

  • Switch and Indicator

    2015-09-22 16:58:0365

    Just to prove that transistors can also be useful in logic situations; this is a data latch and indicator which also is a data switch and has a bidirec...

  • Single OutPut 120VAC 200 Watt Touch Switch

    2015-09-22 15:03:2266

    This simple circuit uses a single IC to form a nice touch switch circuit. A single transistor forms the remote active switch sensor. Multiple switches ...

  • Silicon Unilateral Switch

    2015-09-22 09:45:3370

    Thediacand thesilicon bilateral switchare grouped as bilateral or bidirectional devices because they can breakover in either direction. There are also ...

  • Temperature Sensitive Switch For Solar Collector(UAA170)

    2015-09-22 06:24:0390

    This article describes the Temperature Sensitive Switch For Solar Collector (UAA170). The principle is very simple, very practical. The circuit compone...

  • Touch Switch II Circuit

    2015-09-21 23:06:5366

    Touch Switch II Circuit A touch switch is a switch that is turned on and off by touching a wire contact, instead of flicking a lever like a regular swi...

  • Safe and reliable delay switch circuit

    2015-09-21 13:22:4267

    It should use the safe and reliable delay switch circuit shown as the chart in the places with flammable and explosive materials. After pressing button...

  • Automatic switch for batteries

    2015-09-21 12:13:5166

    Battery switch kit is a clever relay that automatically combines your starting and trolling batteries - so both are being charged - whenever sufficient...

  • LM1830 flow switch circuit design for fluids

    2015-09-21 00:22:2872

    Sensors Using the LM1830 fluid level detector device that sense the presence or absence of aqueous solutions can be designed a very simple flow switch ...

  • Liquid Level Switch

    2015-09-20 21:02:2864

    Liquid Level Switch Description Here is a simple level switch circuit that switches on one relay and switches off another relay when the fluid level ex...

  • Soft-Action Mute Switch

    2015-09-20 18:16:4861

    Figure 1 This simple circuit is a line-level audio signal muting switch based on a soft-action power on/off process. When the S1 switch is closed, R4, ...

  • Sound Activated Switch circuit

    2015-09-20 17:42:1866

    With this sound activated switch, control by sound may be very useful, not just on a robot but also for a bit of home automation, for example a sound-a...

  • Intelligent trailing switch.

    2015-09-20 17:19:5567

    Description. This is a very simple yet effective circuit in which the equipments connected at the so called trailing sockets will run only if the equip...

  • Analog switch circuit

    2015-09-20 15:11:0975

    This analog switch circuit is designed to switch on or off and analog line. it consists of two analog switches in IC form that are controlled by two pu...

  • Switch Mode Regulator Provides -12V Negative Supply from Pos

    2015-09-20 13:34:4660

    This article describes the Switch Mode Regulator Provides-12V Negative Supply from Positive Supply (74HCT86D). The content is very simple, very helpful...

  • Switch Debouncer

    2015-09-20 12:15:1761

    Using a 7473 JK flip-flop U1A connected as a monostable to drive U1B, as a switch debouncer. The circuit is self-clearing during power up. A 100-ms pul...

  • InfraRed Detector for Proximity Switch

    2015-09-20 09:27:0765

    The proximity switch can work for a wide range of power, from 8v to 18v DC, D3 protects reverse power supply connections, and U1 regulates the supply t...

  • Push Button Electronic Switch with ON-OFF Feature

    2015-09-20 07:19:3169

    Figure 1 The circuits was designed to illustrate the different functionality of an ON- OFF electronic switch the uses a push button mechanism. Electron...

  • Touch Switch Monostable/Timer (NE555)

    2015-09-20 05:31:2681

    This article describes the Touch Switch Monostable / Timer (NE555). The principle is very simple, very practical. The circuit components can help you u...

  • 4 Digit Keypad Switch

    2015-09-20 02:12:4164

    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....

  • Electronic Lamp Switch Including Time Delay Option

    2015-09-20 01:21:3163

    Figure 1 The circuit has been designed to create a lamp switch operated electronically with an option of setting a delay in the time of execution of op...

  • Mains Slave Switcher(1N4148)

    2015-09-19 23:22:21103

    This article briefly describes the Mains Slave Switcher (1N4148). This principle is easy to understand, but also very practical. Depth understanding of...

  • Sensitive Clap Switch circuit

    2015-09-19 21:42:05216

    This is the circuit of a very sensitive clap switch. It switches ON/OFF a White LED or electrical appliances through claps. The circuit can sense the s...

  • Relay-Operated Switch for Over Voltage and Under Voltage

    2015-09-19 21:29:3663

    Figure 1 The circuit was designed to provide a voltage over and under the specified value with the use of a switch that will be operated by a relay. LM...

  • Touch switch using CD4011.

    2015-09-19 16:44:2172

    Description. A simple touch switch circuit using CD4011 is given here. The IC CD4011 is wires as a flip flop here. The 9, 13 pins of the IC works as th...

  • USB Switch For Printers

    2015-09-19 12:13:5864

    This circuit switches a printers USB connection from a PC to a laptop. What was needed was a method of allowing a laptop to use the printer occasionall...

  • Standard Touch Switch by Gate of IC 4011

    2015-09-19 11:02:59103

    This circuit uses a 4011 logic gate digital as the bases of the touch switch. It are Standard and very easy because I used a Gate of IC 4011. In circui...

  • High Side Current Sensing for High Side Switching

    2015-09-19 10:43:38135

    Sometimes, there are unexpected solenoid and excessive corrosion occurs on current sense circuit. Corrosive effects can be occurred because of the diff...

  • Switching solenoid driver IRCUIT (BC327)

    2015-09-19 08:49:5874

    This article describes the Switching solenoid driver IRCUIT (BC327). The principle is very simple, very practical. The circuit components can help you ...

  • H bridge switch for small motors

    2015-09-19 06:21:2969

    4QD manufacture motor speed controllers so all our H bridges are PWM. Heres a simple switch circuit for reversing and stopping a motor without any cont...

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