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  • MICROPOWER_CLOCK

    2017-01-07 20:11:1361

    Free-running frequency and duty cycle are controlled by RA, RB, and C in astable MVBR connection of Exar XRL555 micropower equivalent of 555 timer. Wit...

  • TL494 Internal function block diagram and basic unit circuit

    2017-01-07 19:51:0163

    The system uses a PWM generator TL494 producd by Texas Instruments.It is a typical fixed-frequency PWM control IC, which contains all the required cont...

  • CLOCK_SYNCHRONIZED

    2017-01-07 19:46:3560

    Circuit generates pulse that is two clock pulses wide, in synchronism with clock, from random input pulse whose width is more than 5 times that of cloc...

  • The e-glass elevating and control door lock wiring circuit o

    2017-01-07 19:46:1360

    See as the figure: the e-glass elevating and control door lock wiring circuit of DPCA-VOLCANE DC714035-battery; 50-power supply box; 52-inscribing fuse...

  • The internal block and typical application circuit diagram o

    2017-01-07 19:44:3163

    LA7830 IC includes field excitation, field output, field blanking circuit and overheat protection circuit and so on, the block diagram is shown as the ...

  • ALARM_FOR_DIGITAL_CLOCK

    2017-01-07 19:41:5761

    Uses transistor as driver to turn on programmable unijunction transistor (PUT) oscillator feeding 8-ohm loud-speaker. Pitch of tone can be adjusted wit...

  • Digital lock 3

    2017-01-07 19:23:5262

    The digital lock circuit consists of the optical switch circuit, trigger, sound and alarm circuit and solenoid drive circuit, and it is shown in Figure...

  • Split Supply - Current Blocking Switch Machine Power Supply

    2017-01-07 19:13:3160

    The next circuit is essentially the same as the one above except that a split of dual output is provided. The circuit therefore has a PLUS, MINUS and N...

  • Monoblock Car Amplifier TDA7294

    2017-01-07 19:09:0861

    Monoblock Car Amplifier circuit TDA7294 is based on an article “Improving the power amplifier IC TDA7294″ Journal of the radio, № 11 2005. This m...

  • Mazda 96 PROBE Shift Gear Interlocking Circuit

    2017-01-07 19:03:0661

    The Mazda 96 PROBE shift gear interlocking circuit is shown in the picture....

  • 33MHz multi-output clock driver circuit

    2017-01-07 18:54:4560

    It is the clock driver circuit composed of P149FC32805, and the maximum clock frequency is 133MHz. It is suitable for the distribution of clock signal ...

  • 555 hotel security electronic lock device circuit

    2017-01-07 18:54:3362

    The control circuit is composed of the IC1(555) and the R1~Rn,R0,C1, it produces many kinds of oscillation frequency signals in the range of 10Hz~...

  • Central Locking Interface(1N914)

    2017-01-07 18:37:0461

    This article briefly describes Central Locking Interface (1N914). Although this circuit is very easy to understand, but also very practical. Circuit el...

  • The block frequency rising (wide band reaction signal regula

    2017-01-07 18:25:3061

    By 3 external resistors, the block frequency can be risen from 1KHz to 20KHz, which can meet the need of wide band. The circuit is shown in the figure....

  • Lock_in_amplifier

    2017-01-07 18:24:5760

    carrier-modulated output of the signal source. Because the desired signal information is contained within the carrier, the system constitutes an extrem...

  • Digital code lock

    2017-01-07 18:24:2161

    Description. This is a simple but effective code lock circuit that has an automatic reset facility. The circuit is made around the dual flip-flop IC CD...

  • Central locking、guard against theft and alarm system and in

    2017-01-07 18:21:1261

    Reversing light and start locking relay circuit diagram as shownWelcome transshipment, the informations are come from Weiku e-market net( www.dzsc.com)...

  • Digital lock 9

    2017-01-07 18:10:5561

    The digital lock circuit is composed of the light control coding circuit, logic control circuit, control implementation circuit and alarm, and it is sh...

  • CLOCK_PULSES

    2017-01-07 18:05:1760

    Tunnel-diode one-shot produces number of pulses in series, proportional to value of L1 and width of input pulse.-C. A. Budde, Pulse Width Converted to ...

  • Combination Lock (PIC16F84)

    2017-01-07 18:04:0860

    This article describes the lock (PIC16F84) diagram. The circuit contains the components PIC16F84. And the components have the following special micro c...

  • Precision Phase Locked Loop Circuit

    2017-01-07 18:00:3261

    The precision Phase Locked Loop PLL in this circuit acts very much the same as the basic PLL, with refinements in various places. The flip-flops in the...

  • Digital Multimeter Electric Block Circuit with Constant Curr

    2017-01-07 17:46:1561

    The digital multimeter electric block diagram with constant current source is shown as above.The electrical resistance measuring principle in the digit...

  • The money-locker or closed chamber anti-pry alarm circuit

    2017-01-07 17:28:0561

    See as the figured circuit, it consists of the chamber linked switch SB, electric switch, light control sound circuit and audio amplifier, etc. If it i...

  • The block frequency reducing circuit of capacitors (wide ban

    2017-01-07 17:27:3360

    By the external capacitors CSEL1 and CSEL2, the block frequency of the low-pass filter can be set under 1KHz, which can meet the narrow band need, see ...

  • Electronic Combination Lock

    2017-01-07 17:15:1761

    This circuit is very basic to build. To open a the lock which is connected to the K1 Loadyou must press each momentary switch in the correct sequence. ...

  • Blocking Inductive Kickback (with diodes)

    2017-01-07 17:07:3062

    Java-Runtime is required for Circuit Simulation. Download Java for Windows Download Java for Linux Download Java for Other OS Start Simulation Circuit ...

  • The simplest Electronic Door Lock

    2017-01-07 17:04:2560

    To put the relay in tension the 4 buttons S1 S4 must be pressed. If anyone of the 4 butoons S5 S8 are pushed the relay donts tension ( dont receives su...

  • Quartz_stabilized_V_F_converter_external_clock

    2017-01-07 17:04:1160

    Fig. 12-6 This circuit requires an external4-kHz clock, but it provides very high linearity (typically 0.025%, limited by the 6012 DAC). Range is 1 Hz ...

  • Shanghai GM Chevrolet(Epica) saloon car anti lock braking sy

    2017-01-07 17:01:2560

    Shanghai GM Chevrolet(Epica) saloon car anti anti lock braking system circuit diagram(two)...

  • 12 or 24h clock circuit

    2017-01-07 16:55:0260

    AMIS1736 clock chip is produced by American Microsystems company. It can drive LCD directly. The display equipment can display 24h or display 12h coupl...

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