Position: Index > Lock Circuit >
  • TDA9181 integrated block internal box circuit

    2017-01-06 16:04:3062

    TDA7315D0l3TR--Sound Field Control/Analog Surround Processing ICThe TDA7315D0l3TR is designed as one kind of Sound Field Control/Analog Surround Proces...

  • TDA7073A integrated block internal box circuit

    2017-01-06 15:52:0165

    The TDA4866 is in the 9-pin single in-line package, the pin functions and data of the ic is as shown in table 21.Table 21 TDA7073A pin functions and da...

  • LOCKED_PAIR

    2017-01-06 15:51:0461

    Ungrounded locked or Goto tunnel-diode pair permits logical inversion with no loss of speed or gain. Applications include converting analog television ...

  • CLOCK_FOR_TEST_MESSAGES

    2017-01-06 15:50:1960

    Generates negative going pulse train at choice of four baud rates, to control RTTY test-message generator at four different speeds.-K. Ebneter and J. R...

  • Combination lock your car liftgate (78L05) principle introdu

    2017-01-06 15:40:3060

    This article describes the combination lock car liftgate (78L05) principle. You see the schematic before we let you tell us about the combination lock ...

  • TDA4857 integrated block internal box circuit

    2017-01-06 15:13:5761

    3.Pin functions and dataThe pin functions and data of the TDA4660 and TDA4660V2 is as shown in table 13.Table 13 The pin functions and data of the TDA4...

  • Lighting warn、key warn、safety belt warn、shift lock and

    2017-01-06 14:41:2560

    Tianjin VIOS Lighting warn、key warn、safety belt warn、shift lock and parking lamp circuit diagram as shown:Welcome transshipment, the informations...

  • The simple and useful 3-key interlock electric switch circui

    2017-01-06 14:40:5260

    The structure of the circuit is simple, a channel is opened by pressing a corresponding key, meanwhile the other 2 channels are closed. The contactor s...

  • Selective_clock_sweepable_bandpass_filter

    2017-01-06 14:40:4860

    This circuit shows two LTC1062s connected to form a clock-sweepable bandpass filter. Figure 7-21B shows the frequency response for the values given in ...

  • High confidentiality electronic lock circuits T630 and T631

    2017-01-06 14:35:5060

    You can use the jump yard decoding circuit to form the high confidentiality electronic lock that can be used in the safety deposit box, the confidentia...

  • TRIGGERED_BLOCKING_OSCILATOR

    2017-01-06 14:33:4961

    Gives pair of output pulses, with opposite polarity, for controlling timing and spacing of flashes.-P. Scott, Microflash and Pulse Stimulator Tests Hum...

  • BUILDING_BLOCK_AMPLIFIER

    2017-01-06 14:33:0761

    Has voltage gain of 1,000 and gain-bandwidth product of 15 Mc. High-fidelity audio preamp can be designed with two such packages, one with equalization...

  • The Digital Clock/Outside Temperature Circuit of the DPCA-Pi

    2017-01-06 14:32:3061

    The Digital Clock/Outside Temperature Circuit of the DPCA-Picasso 2.0 Car...

  • The internal block circuit diagram of LA7680 IC

    2017-01-06 14:18:3775

    LA7680 is a small TV signal processing monolithic integrated circuit which is produced by Sanyo company of Japan. It is widely used in various types of...

  • Digital Electronic Lock Wiring diagram Schematic

    2017-01-06 14:16:3661

    This Digital Electronic Lock Circuit Diagram shown below uses 4 common logic ICs to allow controlling a relay by entering a 4 digit number on a keypad....

  • Clock Generator Circuit

    2017-01-06 14:15:2961

    This is the circuit diagram of Clock Generator circuit based NAND logic gate. You can use 4011 for CMOS IC and 7400 for TTL IC. Circuit Notes: Excellen...

  • Quartz Crystal Synchronizer for Pendulum Windup Wall Clock

    2017-01-06 13:55:5569

    Mechanical Clock Project:Last year, I found a 31 day pendulum wall clock (dissambled) in a box ofparts at a swap meet and decided to try and put it tog...

  • CALENDAR_CLOCK

    2017-01-06 13:28:4962

    Uses Fairchild FCM7001 IC eauivalent of Cal-Tex CT7001 doek chip (which is no Ionger available) to drive six 7-segment LEDs that can be switched to sho...

  • PHASE_LOCKED_LOOP

    2017-01-06 13:17:2361

    The PLL will lock onto an input signal. Both triangle- and square-wave outputs are available.A quad op amp can be used in this circuit, which should be...

  • Roadblocks flash - used boat or car

    2017-01-06 13:16:4861

    The assembly shown, the flash rate to adjust the potentiometerR3, and its range is 36-160 flashes per minute. The use of incandescent flash C106 SCR, s...

  • Long-distance call lock circuit

    2017-01-06 13:08:0260

    The long-distance call lock circuit is as shown, it has the following features: if you want to make a long distance call (the first telephone number is...

  • Digital Door Lock – Password based Electronic Code

    2017-01-06 12:53:5262

    This Digital Door Lock is simply a password based electronic code lock designed using 8051 micro controller, a keypad and a 12 volt dc relay. In this a...

  • Simple code lock circuit

    2017-01-06 12:50:4561

    This simple code lock circuit described here is of an electronic combination lock for daily use. It responds only to the roght sequence of four digits ...

  • Unlocking RS232 multimeter

    2017-01-06 12:48:3063

    If you read the datasheet for those ICs – the ES519xx series – you’ll make the interesting observation that they all do RS232 compliant output. S...

  • CXA1686M Clock Pulse Generator Integrated Circuit

    2017-01-06 12:47:3261

    The CXA1686M is a clock pulse generator IC produced by the Sony company which is widely used in Changhong NC-3 cassette mechanism series large-screen c...

  • FM_IF_gain_block_with_voltage_regulator

    2017-01-06 12:32:1761

    FM IF gain block with voltage regulator. The gain at 10.7 MHz is typically 35 dB.Operating voltage range is 10 to 20 volts. The internal voltage regula...

  • TA7240AP internal block diagram and its main parameters

    2017-01-06 12:17:5560

    TA7240AP is thestereo audio power amplifier IC produced by Japan's Toshiba Corp. It has high-fidelity, low-noise , high-power characteristics.It iswide...

  • MULTIPLEXED_CLOCK_DlSPLAY

    2017-01-06 12:03:3262

    Multiplexed display suitable for LED readouts is provided by circuit using TTL counters to count 60-Hz Iine.When count reaches 10 o'clock, flip-flop M ...

  • The pulse generating circuit composed of phase-lock loop

    2017-01-06 11:57:5860

    The output frequency of the circuit is 10Hz~999kHz, the frequency precision is 3-bit and adjustable. In the circuit, MCl4046B(1) is the phase compara...

  • PHASE_LOCK

    2017-01-06 11:50:1760

    Uses flip-flop, filter, and d-c level shift to phase-lock low-frequency oscillator to a desired frequency. Trigger from master frequency source is fed ...

Maybe you like