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Phone Flasher circuit diagram
2014-11-29 22:09:50142When 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...
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1958 - V8's Electrical Wiring Diagram
2014-11-29 21:43:20137The 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 ...
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Low_distortion_bridge_audio_power_amplifier
2014-11-29 20:41:38171This 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 ...
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SSB_CW_DEMODULATOR
2014-11-29 18:11:20221LM373 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...
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Video_amplifier_dc_stabilizer_servo_controlled_FET
2014-11-29 16:02:45175This 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...
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Industrial electronic ignition circuit diagram
2014-11-29 15:59:09216The industrial electronic ignition circuit is composed of the power supply circuit, ignition starter control circuit and boost ignition circuit, and it...
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Telephone Automatic Answering Device Circuit Diagram
2014-11-29 15:00:24176Telephone automatic answering device circuit is shown in the above picture. The recording telephone device has strong ability of anti-disturbance, whic...
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Star Trek Doorbell
2014-11-29 11:37:35107In 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...
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65_KV_TWIN_TRIODE_A_F_OSCILLATOR_CRT_SUPPLY
2014-11-29 11:12:30181Oscillator develops square wove because of saturable square-loop core materical of transformer. Diodes eliminate extra load placed on oscillator by hig...
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TUNNEL_DIODE_SWITCHING_TIME_TESTER
2014-11-29 10:56:23180With 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 ...
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Noninverting_amplifier_for_gains_less_than_10
2014-11-29 10:50:55157This circuit shows an AH0014 connected as a noninverting wideband amplifier, where gains must be less than 10, but more than 1. The characteristics are...
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Visitors identifying electronic doorbell
2014-11-29 09:58:01161The electronic doorbell circuit is composed of the short pulse identification circuit, long pulse identification circuit and circuit music generating c...
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SERVO_DRIVE
2014-11-29 07:55:42221Combination of Fairchild μA795 multiplier and μA741 opamp generates AC error signal for driving two-phase servo-motor. Phase-shifted signal from R1-C...
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TONE_DIALING_TELEPHONE
2014-11-29 06:08:29196This 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...
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What are semiconductors
2014-11-29 05:05:5686Resistors, capacitors and inductors are known as passive components . Electronic components which produces changes in circuit conditions by reacting to...
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Single end normal shock converter circuit principle diagram
2014-11-29 04:50:2097As 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...
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Pulse_width_modulator_using_an_ECG955M_timer_oscillator_chip
2014-11-29 04:49:16171Pulse width modulator using an ECG955M timer/oscillator chip. The flip-flop is connected in a monostable mode. The circuit is triggered with a continuo...
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Great Wall programmed box fan circuit
2014-11-29 04:42:1275Great Wall FS36-40 fan uses programmable technology, and it has three wind species, three wind speeds and four-time segment timing shutdown function. I...
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MUSCIE_SIGNAL_AMPLIFIER
2014-11-29 03:35:24168Differential input amplifier Q1-02 accepts myoelectric signals of 10 to 1,000 microvolts from stump muscles of amputee. Stagger-tuned interstage trans-...
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100_MODULAIION_OF_LIGHT_EMITTING_DIODE
2014-11-29 02:50:53175Inpt 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...
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Percussion electronic doorbell 2
2014-11-29 01:57:10193The percussion electronic doorbell circuit is composed of the percussion detection circuit, voltage doubling rectifying circuit, lamp trigger delay con...
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NONINVERTING_SAMPLE_AND_HOLD
2014-11-29 01:33:52123Matched 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...
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Yamaha Generator EF1000iS Electrical (T8A820M)
2014-11-29 01:32:31107Yamaha Generator EF1000iS This article describes a Yamaha Generator EF1000iS Electrical (T8A820M). The principle is very simple, very practical. The ci...
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Capacitor_discharge_SCR_ignition_system
2014-11-29 01:02:34171Capacitor discharge SCR ignition system. The circuit draws less than 1 ampere at high RPM (courtesy General Electric Company)....
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PHOTOGRAPHIC_DRYER_CONTROL
2014-11-29 00:37:12156Copper drum, serving as single-turn shorted secondary of transformer, is heated by several thousand amperes of induced current. As drum heats up, trans...
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Voice electronic doorbell circuit diagram
2014-11-28 23:53:44103The circuit consists of integrated circuit IC, resistor R, capacitors C1, C2 and button SB, speaker BL, power supply and other components. When people ...
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TV_AFT_system_using_an_EGG1096_14_pin_DIP_with_tab
2014-11-28 22:03:53144TV 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...
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Color_TV_chroma_demodulator_with_tint_control
2014-11-28 21:22:09198Color TV chroma demodulator with tint control. The color demodulators consist of two sets of balanced detectors that receive their reference subcarrier...
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Highly sensitive wireless Snoop device circuit
2014-11-28 20:46:25128The circuit is shown in the figure, it is composed of highly sensitive microphone amplifier and wireless transmitter unit, and the amplifier consisits ...
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LOW_POWER_FM_TELEPHONE_BUG
2014-11-28 19:15:06236Q1 (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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