Position: Index > Electrical Circuit >
  • 1_kHz_WlEN_BRIDGE

    2014-11-12 02:46:59137

    Closed-loop gain of 10, fixed by ratio of R1 to R2, is sufficient to avoid spurious oscillations. Frequency is easily changed by using different values...

  • OPTOISOLATOR_DRIVES_1_A_POWER_TRANSIS_TOR_IC

    2014-11-12 02:34:34120

    Practically any standard optoisolator provides sufficient output to meet input current requirement of power transistor IC capable of handling 1 A. With...

  • OUTLINE_GENERATOR_FOR_TV_STUDIO

    2014-11-12 02:07:42150

    Produces variable-size rectangles in any desired position on tv screen, including horizontal or vertical white lines, for emphasizing particular part o...

  • Voltage_offset_null_circuit_using_an_ECG915_operational_ampl

    2014-11-12 01:36:0596

    Voltage offset null circuit using an ECG915 operational amplifier. See basing diagram for supply connections. Supply is ±15 volts (courtesy GTE Sylvan...

  • Color_TV_chroma_demodulator_with_RGB_output_matrix

    2014-11-12 00:25:52151

    Color TV chroma demodulator with RGB output matrix. By applying a positive going blanking pulse to pin 6, blanking ofthe picture cluing line and framef...

  • Digital lock 2

    2014-11-11 23:22:12121

    The digital lock circuit consists of buttons S1-S10 (S1-S4 are valid password buttons, S5-S10 are the lock buttons), four RS trigger integrated circuit...

  • PLUG_IN_REMOTE_TELEPHONE_RINGER

    2014-11-11 21:16:17107

    This device consists of a ring detector connected to the telephone line. When the telephone rings, the ring detector impresses high-frequency pulses on...

  • 40_MHz_frequency_and_period_counter

    2014-11-11 21:06:44212

    40 MHz frequency and period counter. To obtain the frequency and period it is necessary to divide the 10 MHz oscillator frequency down to 2.5 MHz. In d...

  • FAST_SAMPLE_AND_HOLD

    2014-11-11 20:42:51109

    Strobe pulse developed from logic input of 531 opamp IC, turns on JFET Q1 to complete feedback loop to IC1, Q1, and Q2. C1 charges to voltage equal to ...

  • SINGLE_FRAME_TV_PHOTOGRAPHY_TIMER

    2014-11-11 20:16:17116

    Uses four thyratrons to switch on picture tube for exact 1/30th-sec interval required to complete two interlaced fields and give clean photograph for o...

  • High pressure sodium lamp electronic ballast circuit diagram

    2014-11-11 19:26:4980

    The circuit uses UC3854B as the control chip to establish an active power factor correction circuit with fixed frequency average current-mode, and the ...

  • Thermocouple_temperature_control

    2014-11-11 18:03:17140

    This circuit shows a CA3080A OTA (chapter 11) and a CA3079 zero-voltage switch that are connected to form a thermocouple temperature control, where the...

  • Icebox operating pilot lamp circuit

    2014-11-11 16:56:49144

    Installing operating light on the mains jack makes it convenient to watch icebox's starting and stoping, and can add the beauty to the mains jack to.Th...

  • MC-1496 Arithmetic Product Wave Detector Circuit

    2014-11-11 16:39:11121

    The picture shows a integrated SSB arithmetic product wave detector circuit. The circuit is based on the MC-1496 analog multiplier chip. It contains a ...

  • Automatic Lighting Doorbell Circuit

    2014-11-11 14:46:41133

    When in the night and the veranda also has not light, the doorbell's button is hard to find, especially for the new visitors. They could only knock the...

  • Grid Electrode Driving Circuit Composed Of TK75050

    2014-11-11 14:36:2295

    The picture shows the grid electrode driving circuit composed of TK75050. The TK75050 has the internal functions such as current limiting, thermal brea...

  • Vector_computation_circuit_for_VC2_=_VA2___VB2_using_the_433

    2014-11-11 13:53:23124

    Vector computation circuit for VC2 = VA2 + VB2 using the 433 multiplier/divider and two AD741 op amps (courtesy Analog Devices, Inc.)....

  • Bipolar Telephone Circuit Diagram

    2014-11-11 13:33:3975

    Bipolar Telephone circuit is shown in the above picture. The circuit is a typical applied circuit of bipolar telephone IC SC34014. The circuit is simpl...

  • VIDEO_PATTERN_GENERATOR

    2014-11-11 13:23:58114

    A 3.58-MHz clock drives a counter chain, which addresses a preprogrammed EPROM, to generate a complete NTSC sync and video waveform. The EPROM can be p...

  • SPEECH_NETWORK

    2014-11-11 13:11:46183

    The XR-T5995 Speech Network is a monolithic integrated circuit specifically designed for implementing a low cost telephone circuit. It is designed to u...

  • Electrical isolation for the I2C bus with optocouplers

    2014-11-11 11:14:2188

    When the lines SDA (Serial DAta) and SDA are logical 1, the circuit is at rest with the result that optocouplers IC 1 and IC2 can not convey absolutely...

  • COLOR_BURST_AMPLIFIER

    2014-11-11 10:44:04121

    Burst amplifier Q20 and 3.58-Mc crystal oscillator Q21 are driven by output of 0rst stage of chroma amplifier of transistorized color tv. Amplifier bur...

  • Batteries function principles and construction

    2014-11-11 10:15:1171

    One of the most important and remarkable discoveries was electricity. The practical use of electricity has only been at our disposal since the mid-to l...

  • NERVE_STIMULATOR

    2014-11-11 10:13:59142

    Neon relaxation oscillator and transistor give stable pulse gen erator covering range of 0.2 to 2,500 cps for neurophysiology research.-R. D. Ryan, Low...

  • Circuit Symbols of Electronic Components

    2014-11-11 07:49:43372

    One of the most important thing that you need to know when you start to design a circuit project or when you want to make a printed circuit board of an...

  • TV_color_IF_amplifier_and_detector

    2014-11-11 07:36:28123

    TV color IF amplifier and detector. This configuration will provide approximately 84 dB voltage gain. The nominal 3-volt peak-to-peak output can be var...

  • Circuit diagram of auto-adjustment for the telephone ring

    2014-11-11 06:44:29141

    Auto-adjustment circuit of the telephone ringThe above picture is the auto-adjustment circuit added into the HA18(ⅤⅡ) P/ TSD type telephone (the ci...

  • The electronic pulse meter (CD4553, CD4511)

    2014-11-11 05:59:00127

    Pulse meter and heart rate meter is actually a kind of instrument with another name, and two instruments use different sampling sites. Heart rate meter...

  • Programmable_100_hour_timer_with_display

    2014-11-11 05:58:03162

    Programmable 100-hour timer with display. The 8260 on the right uses the carryout gate to generate a t -second clock from the 60-hertz line. The diodes...

  • SA866 pin array diagram

    2014-11-11 05:24:0489

    SA866 is special asynchronous machine SPWM control IC. It integrates kinds of protection function except generate SPWM pulse which is meeting requireme...

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