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  • Farnell Electronic Electrical Components (BC549C)

    2014-11-16 15:07:4270

    This article describes the Farnell Electronic Electrical Components (BC549C). The content is very simple, very helpful. Components in this article can ...

  • Capacitor and Capacitance

    2014-11-16 14:22:1366

    Capacitors are electronic passive components designed by placing two conductive plates (usually metal) in close proximity with each other, separated us...

  • Difference_of_the_squares_circuit_using_an_AD532_multiplier_

    2014-11-16 13:29:08100

    Difference of the squares circuit using an AD532 multiplier/divider. This chip is available as a 10-pin TO-100 or as a 14-pin DIP (courtesy Analog Devi...

  • PARALLEL_PATH_CONTINUITY_CHECKER

    2014-11-16 13:26:18111

    Used for monitoring nonseparable parallel paths for continuity in automatic testing equipment. Current through circuit under rest is limited, to preven...

  • SCR_control_circuit_with_dc_output_that_uses_an_SBS

    2014-11-16 12:26:53149

    This circuit is similar to that of Fig. 8-25, except that a provided to the load. With MCR3818-4 controlled rectifiers mounted heatsink, this circuit w...

  • EXPOSURE_INDICATOR_FOR_ENLARGER

    2014-11-16 11:54:46131

    One leg of Wheatstone bridge is unbalanced by light shining on phototube. Sensitivity of circuit is adjusted to match speed of enlarging paper with pot...

  • Electronic password switch 1

    2014-11-16 11:39:48153

    The electronic password switch circuit is composed of the password input circuit, monostable flip-flop, bistable flip-flop, reset circuit, control exec...

  • SIREN

    2014-11-16 10:57:41143

    This circuit uses one of the LM389 transistors to gate the power amplifier on and off by applying the muting technique. The other transistors form a cr...

  • Color_TV_chroma_processor

    2014-11-16 10:35:26117

    Color TV chroma processor. The ECG1158 includes the functions for chroma amplifier, oscillator, ACC, color killer and color control (courtesy GTE Sylva...

  • PHONE_LIGHT

    2014-11-16 10:17:39141

    When the phone does ring the triac is triggered into conduction by a signal applied to its gate (G) through a bilateral switch (diac), D2. The triac ac...

  • Ultrasonic Liquid Level Indicator Circuit Composed Of NE555

    2014-11-16 09:57:52166

    The picture shows the ultrasonic liquid level indicator circuit. This circuit is made up of ultrasonic transmitter circuit and receiver circuit.The ult...

  • Underarm odor therapeutic apparatus circuit diagram

    2014-11-16 09:44:1573

    Underarm odor is a product of bacterial mildew. Ozone has the functions of sterilization, anti-odor, anti-mold and anti-mildew, and it has some specifi...

  • Wireless responder circuit with transceiver and codecs modul

    2014-11-16 08:49:2873

    Transmitter circuit is mainly composed of radio transmission header TDC1808 and dedicated coding integrated circuit MC145026, and it is shown in Figure...

  • Blind crowing device circuit

    2014-11-16 06:18:31125

    The blind always feel not convenientwhen they usetiming clock to crow herald the break of a day,so using blind crowing device circuit to make crowing d...

  • 10000 h timing circuit with minutes and seconds

    2014-11-16 05:45:01121

    This circuit is electronic clock circuit. It can time to 10000h. It is supplied bybattery for liquid crystal display. Its power consumption is very sma...

  • 20_METER__DIRECT_CONVERSION

    2014-11-16 05:37:18125

    Well-designed circuit provides pleasing polarity and depth of sound, with SSB signals seeming to stand out against nearly noiseless background. Covers ...

  • Ultralong_delay_timer_using_two_8250_16_pin_DIPs

    2014-11-16 03:15:20150

    Ultralong delay timer using two 8250 16-pin DIPs. The output is normally high when reset, and goes low upon application of a trigger input. It stays lo...

  • An experimental crystal oscillator FM transmitter circuit

    2014-11-16 02:38:2177

    As shown in Figure 1, V1 and related resistive and capacitive components form the first level audio amplifier circuit which provides sufficient strengt...

  • DUO_DIODE_HALF_WAVE_SWITCH_MODULA_TOR

    2014-11-16 02:17:55103

    Tube serves in place of chopper. Carrier voltage turns diodes on and off, transferring d-c input signal to output when diodes are not conducting. With ...

  • Basic Voltage Regulator Composed Of Zener Diode

    2014-11-16 01:38:51103

    The picture shows the basic voltage regulator composed of zener diode. In the circuit, the R is current-limiting resistor. The RL is loading resistor. ...

  • LUMINANCE_AMPLIFIER

    2014-11-16 01:02:48121

    Provides bandwidth of 2 Mc, with 200.v output, for color set having transistors in all except defection and rectifier circuits. Brightness is controlle...

  • PRECOMPRESSION_SHAPER

    2014-11-16 00:13:24105

    Improves effective signal strength of SSB transmitter by shaping AF frequency response ahead of audio compressor. Low-noise FET preamp providing initia...

  • 10_V_SIREN_CHIP

    2014-11-15 23:33:22123

    One section of National MM74C908/MM74C918 dual CMOS driver is used as audio VCO and other section as voltage ramp generator that varies frequency of VC...

  • TV_FM_sound_system_using_the_ECG712

    2014-11-15 22:32:54129

    TV FM sound system using the ECG712. The supply terminal can be connected to any supply voltage with a suitable dropping resistor provided that the dis...

  • Glanze WD-900B microwave oven principle circuit

    2014-11-15 21:59:07166

    R1-The first door interlock switch; S2-the second door interlock switch; S3-door monitoring switch, S4-magnetron self-resetting thermal breaker, RY1-ov...

  • SIREN_WITH_MUTING

    2014-11-15 21:47:56141

    National LM389 array having three transistors and power opamp on same chip uses opamp as square-wave oscillator whose frequency is adjusted with R2B. O...

  • 3_MC_COLPITTS_FOR_TONOMETER

    2014-11-15 15:41:41127

    Frequency shift is proportional to pressure on quartz crystal-D. E. Newell, C. H. Horn, and M. L. Rubin, Measuring Eyeball Pressure with a Crystal Osci...

  • Audi A4 2001 Standard Equipment Electrical (TL061)

    2014-11-15 15:30:3072

    2001 Audi A4 This article describes the Audi A4 2001 Standard Equipment Electrical (TL061). The principle is very simple, very practical. The circuit c...

  • AUTOMATIC_BLOOD

    2014-11-15 14:10:03123

    High-gail amplifier-microphone combination detects pulse beats and feeds them through shaper circuit to hold-relays that lock pressure gages at systoli...

  • Circuitry Design for Electronic Lock, Sauna Lock, Cabinet Lo

    2014-11-15 13:03:5067

    Our company has always been concentrating on researching and developing a series of intelligentized, digitized and networked innovative products. Based...

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