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  • Phone Flasher circuit diagram

    2014-11-29 22:09:50113

    When the phone rings, the BG2 makes IC1A output high, and in one NAND gate end of IC2B, R4, C1 forms the differential circuit to generate spike pulse a...

  • 1958 - V8's Electrical Wiring Diagram

    2014-11-29 21:43:20121

    The circuit principle is the 1958 V8 series cars. We recommend that you carefully read and understand the circuit and then trying to do the electrical ...

  • Low_distortion_bridge_audio_power_amplifier

    2014-11-29 20:41:38134

    This circuit is capable of 40-W into an 8-Ω speaker, or 28-W into a 16-Ω speaker, with a voltage gain of 3 and a full-power bandwidth from dc to 100 ...

  • SSB_CW_DEMODULATOR

    2014-11-29 18:11:20174

    LM373 communication IC uses balanced mixer as product detector, with reinserted carrier reapplied to pin 6. CW or SSB output is taken from pin 7. If de...

  • Video_amplifier_dc_stabilizer_servo_controlled_FET

    2014-11-29 16:02:45138

    This circuit is a wideband, highly stable, gain-of-10amplifier with high input impedance. Input capacitance is about 3 pF. A2 provides a 100-MHz bandwi...

  • Industrial electronic ignition circuit diagram

    2014-11-29 15:59:09161

    The industrial electronic ignition circuit is composed of the power supply circuit, ignition starter control circuit and boost ignition circuit, and it...

  • Telephone Automatic Answering Device Circuit Diagram

    2014-11-29 15:00:24140

    Telephone automatic answering device circuit is shown in the above picture. The recording telephone device has strong ability of anti-disturbance, whic...

  • Star Trek Doorbell

    2014-11-29 11:37:3596

    In the Star Trek ?Next Generation? TV series, the doorbell outside the private quarters of a crew member makes a particular ?beep-boop? sound. The 3v b...

  • 65_KV_TWIN_TRIODE_A_F_OSCILLATOR_CRT_SUPPLY

    2014-11-29 11:12:30143

    Oscillator develops square wove because of saturable square-loop core materical of transformer. Diodes eliminate extra load placed on oscillator by hig...

  • TUNNEL_DIODE_SWITCHING_TIME_TESTER

    2014-11-29 10:56:23139

    With values shown, will light only if tunnel diode under test switches within 0.5.nsec.-J. E. Gersbach and I. Lieber, Switching-Time Tester for Tunnel ...

  • Noninverting_amplifier_for_gains_less_than_10

    2014-11-29 10:50:55134

    This circuit shows an AH0014 connected as a noninverting wideband amplifier, where gains must be less than 10, but more than 1. The characteristics are...

  • Visitors identifying electronic doorbell

    2014-11-29 09:58:01125

    The electronic doorbell circuit is composed of the short pulse identification circuit, long pulse identification circuit and circuit music generating c...

  • SERVO_DRIVE

    2014-11-29 07:55:42175

    Combination of Fairchild μA795 multiplier and μA741 opamp generates AC error signal for driving two-phase servo-motor. Phase-shifted signal from R1-C...

  • TONE_DIALING_TELEPHONE

    2014-11-29 06:08:29154

    This circuit shows the TP5700 directly interfacing to a low-voltage DTMF generator.VREG1 supplies the necessary 2-V minimum bias to enable the TP5380 t...

  • What are semiconductors

    2014-11-29 05:05:5680

    Resistors, capacitors and inductors are known as passive components . Electronic components which produces changes in circuit conditions by reacting to...

  • Single end normal shock converter circuit principle diagram

    2014-11-29 04:50:2081

    As shown in the diagram, when switch tube V1 is turn-on, input voltage Uin totally adds to justified of converter primary coil W1', induction voltage g...

  • Pulse_width_modulator_using_an_ECG955M_timer_oscillator_chip

    2014-11-29 04:49:16127

    Pulse width modulator using an ECG955M timer/oscillator chip. The flip-flop is connected in a monostable mode. The circuit is triggered with a continuo...

  • Great Wall programmed box fan circuit

    2014-11-29 04:42:1270

    Great Wall FS36-40 fan uses programmable technology, and it has three wind species, three wind speeds and four-time segment timing shutdown function. I...

  • MUSCIE_SIGNAL_AMPLIFIER

    2014-11-29 03:35:24128

    Differential input amplifier Q1-02 accepts myoelectric signals of 10 to 1,000 microvolts from stump muscles of amputee. Stagger-tuned interstage trans-...

  • 100_MODULAIION_OF_LIGHT_EMITTING_DIODE

    2014-11-29 02:50:53126

    Inpt of 0.35 v rms at 1 kc gives 100% modulation. Useful operating range of circuit is 30 cps to 25 kc for light-beam communication.-E. t. Bonin, Drive...

  • Percussion electronic doorbell 2

    2014-11-29 01:57:10163

    The percussion electronic doorbell circuit is composed of the percussion detection circuit, voltage doubling rectifying circuit, lamp trigger delay con...

  • NONINVERTING_SAMPLE_AND_HOLD

    2014-11-29 01:33:52105

    Matched pair of FETs gives high input resistance for analog input signal greater than 1012 ohms, while output resistance of FET pair is under 12K. Opam...

  • Yamaha Generator EF1000iS Electrical (T8A820M)

    2014-11-29 01:32:3193

    Yamaha Generator EF1000iS This article describes a Yamaha Generator EF1000iS Electrical (T8A820M). The principle is very simple, very practical. The ci...

  • Capacitor_discharge_SCR_ignition_system

    2014-11-29 01:02:34130

    Capacitor discharge SCR ignition system. The circuit draws less than 1 ampere at high RPM (courtesy General Electric Company)....

  • PHOTOGRAPHIC_DRYER_CONTROL

    2014-11-29 00:37:12127

    Copper drum, serving as single-turn shorted secondary of transformer, is heated by several thousand amperes of induced current. As drum heats up, trans...

  • Voice electronic doorbell circuit diagram

    2014-11-28 23:53:4489

    The circuit consists of integrated circuit IC, resistor R, capacitors C1, C2 and button SB, speaker BL, power supply and other components. When people ...

  • TV_AFT_system_using_an_EGG1096_14_pin_DIP_with_tab

    2014-11-28 22:03:53121

    TV AFT system using an EGG1096 14-pin DIP with tab. This type of AFT is for a double-ended system, where both positive and negative correction voltages...

  • Color_TV_chroma_demodulator_with_tint_control

    2014-11-28 21:22:09154

    Color TV chroma demodulator with tint control. The color demodulators consist of two sets of balanced detectors that receive their reference subcarrier...

  • Highly sensitive wireless Snoop device circuit

    2014-11-28 20:46:25108

    The circuit is shown in the figure, it is composed of highly sensitive microphone amplifier and wireless transmitter unit, and the amplifier consisits ...

  • LOW_POWER_FM_TELEPHONE_BUG

    2014-11-28 19:15:06178

    Q1 (2N3904) is an oscillator tuned to a quiet spot in the FM broadcast band. D1 through D4 (1N914) ensure proper polarity. Dc from the line powers the ...

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