• Continuity Tester Circuit Diagram

    2016-01-26 03:03:0090

    Having good contacts is important not only in your daily life, but also in electronics. In contrast to social contacts, the reliability of electrical c...

  • Servo Tester (CD4538)

    2016-01-26 02:32:1271

    This article describes the Servo Tester (CD4538). The principle is very simple, very practical. The circuit components can help you understand better g...

  • Multilevel Continuity Tester

    2016-01-26 00:17:3171

    This continuity tester not only show if a connection is continue or not, but also determine the range? of? its conductivity level. Here is the schemati...

  • Measureall Workbench Test Instrument

    2016-01-26 00:00:0372

    This was a Student Project of mine, it is a very basic instruments that could do most of the tasks on a test bench. The cabinet used, was available as ...

  • 40khz IR Tester(IRFZ44N)

    2016-01-25 22:30:1970

    This article describes a 40khz IR Tester (IRFZ44N). The content is very simple, very practical. The components of the article can help you understand b...

  • Tera Ohm Meter and Insulation Tester

    2016-01-25 20:26:1880

    This is a 20 Tera Ohm Insulation Tester I made around 20 Years Back. It had even Polarization Index for Transformer Insulation. It generated 1000V DC R...

  • Voltage Rating Tester for Zener Diode

    2016-01-25 20:08:1067

    Figure 1 The circuit has been constructed to test and measure the voltage rating of zener diodes. 555 Timer – an 8-pin electronic device used in seve...

  • Testing AVR universal bootloader on Atmega128

    2016-01-25 19:51:37108

    After project source code is developed there is always need to flash it to microcontroller. There are few ways to program AVR microcontrollers. Usually...

  • Microphone Circuit Test Oscillator (LM1458)

    2016-01-25 19:41:40108

    This article describes the Microphone Circuit Test Oscillator (LM1458). The content is very simple, very helpful. Components in this article can help y...

  • Universal Test Probe

    2016-01-25 18:08:1778

    The compact test probe provides rapid `measurement` of voltage levels at digital gates, fuses, diodes, batteries, and others. It does not provide absol...

  • Transistor Tester (NE602AN)

    2016-01-25 17:49:0067

    We can use this basically a high gain amplifier with feedback circuit to cause the LED flash at rate determined by the 10u and 330k resistor. Before in...

  • 4-220V-test-probe

    2016-01-25 17:15:3670

    Using inexpensive components, you can fit a simple probe circuit into a pencil-sized enclosure. When both LEDs are on, the probe indicates the presence...

  • Soil Moisture Tester

    2016-01-25 15:12:1764

    For those of us who dont like to get their hands dirty, this simple soil moisture tester quickly checks the state of their plants and how much attentio...

  • Continuity Tester

    2016-01-25 12:35:0668

    Circuit diagram Parts R1 1K R2 2K2 R3,R4 22K R5 2K7 R6,R7 56K R8 *See text C1,C2 22nF D1,D2 1N4148 Z1 8V2, 1/4 watt T1 2N3905 (PNP) T2,3,4,5 2N3904 (NP...

  • Components Voltage Tester Circuit Schematic

    2016-01-25 12:06:2570

    This simple circuit tests speakers, microphones, transformers and voltage. It's basically a very low frequency oscillator that produces extremely short...

  • AC Current Measurement

    2016-01-25 11:08:40133

    View Full Size Image View Original Datasheet The LTC1966 is a true RMS-to-DC converter that utilizes an innovative patented DS computational technique....

  • Open Loop Laboratory Test Circuit for UC1825 Series

    2016-01-25 10:14:5465

    The UC1825 family (UC2825, UC3825) are PWM control ICs designed for use in applications such as current-mode or voltage mode systems. The following cir...

  • DS2438 used for measuring traction battery packs circuit

    2016-01-25 10:12:3066

    Traction battery packs test chip produced by America Dallas company has rich function, and itis convenient to achieve monitoring the running state of e...

  • SCR TESTER

    2016-01-25 09:05:0669

    SCR TESTER CIRCUIT The Device under test cathode, anode and gate are connected to the units CATHODE, ANODE and GATE terminals, respectively. PARTS LIST...

  • Connection Tester

    2016-01-25 07:34:5067

    Description: A low resistance ( 0.25 - 4 ohm) continuity tester for checking soldered joints and connections. Circuit diagram Notes: This simple circui...

  • Non contact ac detector voltage tester using CD4060

    2016-01-25 07:34:4064

    Tools that features equivalent of a professional, easy to use, cheaper, and more importantly, safe for use. For checking to find AC 220 Volt or 120V or...

  • How to build Quick On-Board Junction Tester Circuit Diagram

    2016-01-25 06:52:0264

    Description Short circuits or broken pcb tracks can be easily recognized by means of a Multimeter, but this tool can give wrong results when testing th...

  • How to test an LDR

    2016-01-25 06:32:5862

    LDR (light dependent resistance) can be very easily tested by using a digital multimeter. We all know that the resistance of an LDR varies according to...

  • Test Transistor in Circuit by IC 4011

    2016-01-25 06:12:37106

    This circuit to Test Transistor in Circuit (PCB) Easy to use. It useIC 4011or CD4011 or MC14011 or TC4011 , very low cost. Supply volt 9V. Related Link...

  • Cable Tester Circuit

    2016-01-25 04:59:36124

    At the heart of the cable tester are two op amps, which are used as a window- comparator to indicate a short- or open-circuit condition. A third op-amp...

  • Concentration test circuit (BC548)

    2016-01-25 04:03:2064

    This article describes the Concentration test circuit (BC548). The content is very simple, very helpful. Components in this article can help you unders...

  • Transistor Tester electronic circuit diagram

    2016-01-25 03:38:2566

    This simple circuit has helped me out on many occasions. It is able to check transistors, in the circuit, down to 40 ohms across the collector-base or ...

  • Ground-earth tester

    2016-01-25 02:42:1371

    The circuit is simple and foolproof if wired correctly. Under normal conditions, only lamps 1 and 3 should be lit. If lamp 2 comes on, the cold lead is...

  • Concentration test circuit

    2016-01-25 02:35:2065

    This is the test concentration range, is ideal for a player to a game. Without a Net Amri alarm will be heard immediately. Operation of the circuit is ...

  • NE570 Compressor Typical Test Circuit and Datasheet

    2016-01-25 01:19:5467

    Since the NE570 known to be a useful low cost dual gain control circuit, this compressor or compandor device used to be applied in cellular and radio c...

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