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  • How to build 10,000x With One Transistor

    2016-05-07 18:40:2259

    Description For a collector follower with emitter resistor, you’ll often find that the gain per stage is no more than 10 to 50 times. The gain increa...

  • Lie detector circuit design using transistors

    2016-05-07 18:39:0766

    Sensors This Lie detector circuit is designed using few common electronic components .The function of this lie detector circuit is based on the variati...

  • 4 Transistor FM Receiver

    2016-05-07 18:34:3766

    4 Transistor FM Receiver This is a pocket sized receiver I built in 1994. The idea was to make a simple but useable receiver running off 3V. My previou...

  • Phototransistor circuit

    2016-05-07 18:34:0459

    If you connect the phototransistor in this circuit, the collector of the phototransistor is connected with the positive potential, the emitter of it is...

  • Philips BC337 NPN General Purpose Transistor Datasheet

    2016-05-07 18:20:3660

    The BC337 transistor is an NPN general purpose transistor. These devices are used for general purpose switching and amplification, e.g. driver and outp...

  • IGBT-Insulated Gate Bipolar Transistors

    2016-05-07 18:14:5761

    Introduction to IGBT-Insulated Gate Bipolar Transistors IGBT-Structure Insulated gate bipolar transistor (IGBT) is a new high conductance MOS gate-cont...

  • Phototransistor chip structure schematic circuit

    2016-05-07 18:09:4759

    The phototransistor is the same as the conventional semiconductor transistor. It is the semiconductor tube that has the NPN or PNP structure with the s...

  • A few kinds of silicon photo-transistor main parameters

    2016-05-07 18:03:2260

    Remarks:(1) The parameters 3DU1 XX type and 3DU2 XX yype are the same. But the shapes are different. The shape of 3DU1 XX is Φ x 5(mm x mm), the shape...

  • Transistor Turns Op Amp On Or Off

    2016-05-07 18:03:1760

    When transistor Q1 is switched off, the circuit behaves as a voltage follower. By applying a positive vol tage to the emitter of Q1 via a 10 KOhmhm res...

  • The Combination of Nanoelectronic Transistor with Biological

    2016-05-07 18:00:5859

    Firstly, who will ever think that it’s possible to combine nanoelectronic transistor with biological machine, as they are completely two different th...

  • 3DU series silicon phototransistor package type and dimensio

    2016-05-07 17:55:3759

    The 3DU series silicon phototransistor can be used in the nearing infrared detector circuit, the optical coupling circuit, the encoder circuit, the cha...

  • Transistor Capacitance Meter Circuit (OC44)

    2016-05-07 17:50:2295

    This article describes Transistor Capacitance Meter Circuit (OC44). The content is very simple, very helpful. Components in this article can help you u...

  • NiCd charger circuit diagram with transistors

    2016-05-07 17:47:4063

    Battery charger circuits This NiCd charger allows simultaneous charging of up to seven NiCd batteries connected in series. This number can be increased...

  • Walkaround Transistor Throttle Schematic

    2016-05-07 17:39:1659

    In the next circuit walk around control is added to the throttle. A 4 conductor, 22 Gauge stranded cable will allow the operator to move around with th...

  • THREE_TRANSISTOR_CB_TRANSCEIVER

    2016-05-07 17:31:2863

    Has 30-mw r-f output and range of several thou. sand feet. Detector uses 40-kc quench. Draws 15 ma for receive and 30 ma for transmit. loudspeaker serv...

  • TRANSISTOR_DIODE_AfOR_GATE

    2016-05-07 17:29:5159

    Low leakage and low storage time of silicon epitaxial transistor allow omission of base turn-off sup ply while giving medium-speed operation over wide ...

  • Single Transistor Metal Locator

    2016-05-07 17:22:2663

    This is a metal locator circuit. This circuit is useful to detect metal. This circuit uses a AM radio and one-transistor oscillator. This circuit is in...

  • COMPLEMENTARY_TRANSISTOR_LOGIC

    2016-05-07 17:18:0760

    Uses both pnp and npn transistors, with pnp emitters tied together and returned through 1K resistor to positive voltage supply. Propagation delay is 3 ...

  • TRANSISTORS_FOR_DRIVER_TUBES

    2016-05-07 17:08:2060

    Solidstate replacement for 12BY7A power amplifier runs much cooler than tube. Shield is required between input and output circuits. Gate 2 is biased ve...

  • Car Battery Charger with transistors

    2016-05-07 16:47:4859

    This car battery charger circuit can be used to charge 12V and 6V batteries. If it is used a transformer that can deliver 4A to 5A at a voltage between...

  • Grid Electrode Driving Circuit Composed Of Two Transistors

    2016-05-07 16:34:0059

    The picture shows the grid electrode driving circuit composed of VT1 and VT2 which are in the emitter follower working mode. For the power MOSFET whose...

  • EXTRA_TRANSISTOR_STABILIZES_ONE_SHOT

    2016-05-07 16:29:4959

    Q1 isolates triggering circuit from timing elements R2-C2, making duration of output pulse independent of input pulse amplitude and reducing minimum tr...

  • SCR circuit using TCA780 and transistor amplification 59

    2016-05-07 16:28:5061

    The SCR output current can reach 30A. Adopting potentiometer Rp1 can adjust output DC power. Because the integrated trigger TCA780 only has about 50mA ...

  • Transistor quality checker with buzzer

    2016-05-07 16:27:2759

    You checked the transistor by measuring the resistance between the different pins. Sometimes it has problems, such as when measuring the resistance bet...

  • TRANSISTOR_TURNS_OP_AMP_ON_OR_OFF

    2016-05-07 16:11:3559

    When transistor Q1 is switched off, the circuit behaves as a voltage follower. By applying a positive voltage to the emitter of Q1 via a 10 Ω resistor...

  • Transistor Emitter-Follower Buffer

    2016-05-07 16:08:4759

    For a voltage source, an emitter follower can serve as a buffer. The voltage divider on the left is so strongly affected by the value of the load resis...

  • Transistor Hum Notch Filter

    2016-05-07 16:03:1585

    The function of this circuit is similar with the hum filter in our previous circuit, but it use transistors instead of op-amps. It uses BC109 transisto...

  • Transistor Circuit Design

    2016-05-07 15:49:1563

    Transistors are inevitable parts of Electronic circuits. The success of a circuit design lies in the selection of proper transistor type and calculatio...

  • TRANSISTORS_DRIVE_RELAY

    2016-05-07 15:41:1260

    Relay latches on with +12 v set pulse ot A, and is unlatched by +12 v reset pulse at B.-S.E. Summer,Unijunction Tuansistor Latches Relay With Short...

  • MOS Transistors

    2016-05-07 15:31:0961

    The bipolar junction transistor is the one which amplifies a small change in input current to produce a large change in output current. Another type of...

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