• Logic test probe with memory

    2016-01-27 00:55:5163

    There are two switches: a memory disable switch and a pulse polarity switch. Memory disable is a push-button that resets the memory to the low state wh...

  • UC3842 Test Circuit

    2016-01-26 22:44:49140

    UC3842 IC can be easily found in most of the electronic equipment switching power supply.Normally whenever the power fet shorted, chances are very high...

  • 12/24/48 V D.C. Tester(1N4001)

    2016-01-26 21:16:1771

    This article describes the 12/24/48 V DC Tester (1N4001). The principle is very simple, very practical. The circuit components can help you understand ...

  • Differential capacitance measurement

    2016-01-26 20:17:2962

    A bubble vial with external aluminum-foil electrodes is the sensing element for a simple indicating tiltmeter. To measure bubble displacement, a bridge...

  • Microphone Circuit Test Oscillator

    2016-01-26 20:13:4071

    Microphone Circuit Test Oscillator Related posts: Audio Test Oscillatorsimple microphone preamplifierPulsed LED test circuit (PDF)20MHz VCSEL 3mW laser...

  • Short Tester For 120V Equipment Circuit

    2016-01-26 20:05:5066

    Do you deal with old equipment in unknown condition If so, this little circuit could keep you from causing further harm to already shorted devices. Rep...

  • UC3842 Open Loop Test Circuit and Datasheet

    2016-01-26 19:47:3090

    IC UC3842 SMPS controller is designed for Offline and DC to DC converter applications with minimum external components. This IC features Low Start up C...

  • AVR DDS3 first tests

    2016-01-26 18:46:0370

    Soldering is finished next step is to run fast tests on AVR DDS signal generator to make sure everything works as expected. It appears that rush design...

  • How to build PIC diode tester

    2016-01-26 18:09:3362

    This is a simple use of the PIC 16F84 about a diode tester. Circuit diagram Test procedure : We set ?1? to PB0 and ?0? to PB3. If diode is ok and opens...

  • Car battery voltage tester using LM3914

    2016-01-26 17:51:0076

    This article describes the use of car battery voltage tester LM3914 principle. Figure: When the test button is pressed, the car battery voltage into a ...

  • Remote Tester Circuit

    2016-01-26 16:33:0366

    A simple Remote tester to check all types of Remote hand sets. This simple remote tester can be a good tool to check whether a remote hand set is worki...

  • Temperature Measurement via Thermocouple (OPA335)

    2016-01-26 16:03:0797

    This article describes the Temperature Measurement via Thermocouple (OPA335). The content is very simple, very helpful. Components in this article can ...

  • Continuity-tester

    2016-01-26 14:40:3380

    The continuity tester feeds a voltage through the positive probe to the circuit-under-test, while the negative probe serves as the return line. Voltage...

  • One Ic Capacitance Tester Circuit

    2016-01-26 12:57:0568

    This circuit can be used to match capacitors, etc. The dc output voltage is related to the capacitance values of Cx. The circuit values shown are for c...

  • Reflex Tester Circuit

    2016-01-26 12:37:5065

    Testing human reaction speed is not only a fun way of spending time, but also allows the drawing of conclusions, for example on the skills of a momenta...

  • Crystal Tester CIRCUIT (2N3563)

    2016-01-26 11:53:4976

    A crystal tester circuit is very simple, it contains only oscillator and detector inside. This crystal tester circuit uses one transistor for the oscil...

  • Circuit Board Tester (BC557)

    2016-01-26 11:09:1766

    Indicates the basic integrity of a printed board Circuit diagram: Parts: R1,R2___________22K 1/4W ResistorsD1______________LED (Any dimension and shape...

  • Connection Tester circuit diagram

    2016-01-26 09:36:2963

    Here the low resistance connection tester which can be used as cable or wire tester, soldered joints and other types of connection with resistance valu...

  • Fatigue Testing circuit

    2016-01-26 09:26:0660

    This fatigue testing circuit is very simple and easy to build and will determine how tired a person is. It has been discovered that the highest light f...

  • Internal Resistance Battery Tester

    2016-01-26 07:56:5673

    A designer often needs to know the value of the internal resistance of a battery. Quite a few testers gi ve a relative indication of the value, but thi...

  • 3In1-test-set

    2016-01-26 07:13:1684

    This circuit is designed around a 4049 hex inverter/buffer. Two inverters are used ina dual-frequency signal-injector circuit, another inverter is used...

  • Acoustic Thermometry Measures Temperature To 0.1 Degree

    2016-01-26 07:07:4061

    View Full Size Image View Original Application Note Start Clock Launches Acoustic Pulse into Measurement Path, Sets Width Decode Flip-Flop High. Acoust...

  • Crystal display (LCD) tester

    2016-01-26 05:35:5666

    Liquid crystal displays are currently available in several versions and various sizes. The wide variety of features, has resulted in there a little cha...

  • Bulk Transistor Tester

    2016-01-26 05:15:4671

    This transistor tester is very helpful if you need to sort bulk transistors. In some market, if you know where to find it, sometimes you can get transi...

  • Morse Buzzer Alarm or Continuity Tester by IC 4011

    2016-01-26 05:10:05109

    This circuit uses the integrated circuit CMOS number IC 4011 pretend Square Wave Oscillator , which touch buffer change output (which compose Complemen...

  • Circuit Board Tester using BC547

    2016-01-26 04:33:3366

    Indicates the basic integrity of a printed board Circuit diagram: Parts: R1,R2___________22K 1/4W ResistorsD1______________LED (Any dimension and shape...

  • Circuit For Quiz Contest (74LS373)

    2016-01-26 04:29:4476

    This article describes the Circuit For Quiz Contest (74LS373). The content is very simple, very helpful. Components in this article can help you unders...

  • Infrared Remote Tester

    2016-01-26 03:57:5473

    This is an infrared remote control tester circuit which gives both an audio and visual indication that a remote controller is functioning. D1 is a reve...

  • Full Featured Transistor Tester (CA741)

    2016-01-26 03:46:2676

    This article describes a Full Featured Transistor Tester (CA741). The content is very simple, very helpful. Components in this article can help you und...

  • Ttl logic tester

    2016-01-26 03:43:5161

    Gates Gl and G2 together with resistors Rl and R2 form a simple voltage monitor that has a trip point of 1 volts. Gate G3 is simply an inverter. The di...

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