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  • The electric mosquito dispeller

    2014-11-20 23:14:10106

    The electric mosquito dispeller circuit is shown in figure 1, which consists of the high frequency oscillator circuit, triple voltage rectifier circuit...

  • Electronically_programmed_counter_using_the_Intersil_8240_50

    2014-11-20 22:38:38159

    Electronically programmed counter using the Intersil 8240/50/60 16-pin DIP. Two quad exclusive-NOR circuits with open-collector outputs are wired toget...

  • Full_wave_SCR_bridge_power_supply_for_cotor_TV_rated_at_80_v

    2014-11-20 20:22:39165

    Full-wave SCR bridge power supply for cotor TV rated at 80 volts, 1.5 amperes. This circuit is designed for 19-inch color receivers (courtesy Motorola ...

  • 358_MHz_injection_locked_oscillator_for_color_TVUsing_one_EC

    2014-11-20 18:34:05129

    3.58 MHz injection-locked oscillator for color TV,Using one ECG703A IC. The burst transformer induces the chroma reference directly intothefeedback loo...

  • Eggs automatic incubator circuit diagram 3

    2014-11-20 17:23:51177

    The eggs automatic incubator circuit is composed of the power supply circuit, temperature / ventilation control circuit, automatic egg turning control ...

  • 315_KC_CRYSTAL_OSCILLATOR

    2014-11-20 17:17:17110

    Provides sync signals for tv camera sweeps. Crystal vibrates in lowest-frequency natural mode of long thin bars, resulting in high impedance and diffic...

  • RETINA_STIMULATOR

    2014-11-20 15:45:04209

    Generated pulse is op plied to skin near eyes, to act on nerve cells of retina and give same effect as slight flash of extremely short duration.-P. Sco...

  • ICBT Grid Electrode Driving Control Power Circuit

    2014-11-20 14:34:56148

    The ICBT grid driving circuit itself is using the hybrid method. Its internal optocoupler type, high-voltage type IC would make it small. But the contr...

  • Liquid level controller circuit diagram 1

    2014-11-20 14:10:26167

    The liquid level controller circuit consists of the power supply circuit and level detection control circuit, and it is shown as the chart. Power suppl...

  • Measurement of Electrical Quantities with a CRO

    2014-11-20 09:00:4288

    CRO is a very versatile instrument in laboratory for measurement of voltage, current, frequency and phase angle of any electrical quantity. But before ...

  • TV_sound_channelwith_1_watt_output

    2014-11-20 08:50:32167

    TV sound channelwith 1-watt output. The ECG1133 containsthree IF differential dmplifiers, a phase detector, a DC operated volume control and an AF ampl...

  • Chicks hatched informing device 3

    2014-11-20 08:19:51108

    The chicks hatched informing device circuit is composed of the sonic circuit, delay circuit and alarm circuit and other components, and it is shown in ...

  • DUAL_TONE_DECODING

    2014-11-20 05:22:59109

    Two integrated tone decoders, XR-567 units, can be connected (as shown in Fig.1A) to permit decoding of simultaneous or sequential tones. Both units mu...

  • TELEPHONE_LINE_SIMULATOR

    2014-11-20 04:35:34180

    When both handsets are on-hook, resistors R1 and R2 supply power to them. When both hand-sets are off-hook, they transmit and receive their own audio. ...

  • Electrically Operated Siren by 2N3702 and BC108B

    2014-11-20 04:16:4870

    Figure 1 The circuit was designed with just one circuit element wherein the tone of the siren varies with the actions of a push button switch. Oscillat...

  • SOLID_STATE_THERMOMETER

    2014-11-20 02:51:00160

    The AM ICL7106 31/2-digit analog-to-digital converter by Harris Semiconductor reads the -2.2-mV/°C change in the junction voltage drop of a BC547 tran...

  • Grid Electrode Driving Circuit Composed Of IR2121

    2014-11-20 01:31:51113

    The picture shows the grid electrode driving circuit composed of IR2121. The IR2121 is a low-side grid electrode driving IC with the current-limiting f...

  • TELEPHONE_LINE_IN_USE_INDICATOR

    2014-11-20 01:21:52143

    When a telephone line is not in use, about 48 V appears across the line, which drops to about 10 V or less when the line is in use. This circuit switch...

  • Automatic series reactance starting three-phase motor 1

    2014-11-20 01:10:0976

    As shown in the diagram, thecircuituses time relay KTto realizeautomatic shorting reactor without pressing operation buttonby handsin the switching pro...

  • Simple and practical human approach detector circuit diagram

    2014-11-20 00:14:46125

    Human approach detector circuit is composed of integrated operational amplifier, gate circuit and resistor-capacitor unit in the diagram. Among them, 1...

  • TV lightning protection circuit

    2014-11-19 23:16:15272

    The application circuit of this set is shown in the picture. Watching TV on in thunderstorms, the thunderbolt can scurry into TV and damage it through ...

  • KERR_CELL_SHUTTER

    2014-11-19 22:13:18104

    High-voltage Kerr-cell pulser and parallel triggering synchronization give 5-nsec exposure, with triggering time jitter less than 1 nsec. Power supply ...

  • DATA_RECORDING_CAMERA_TIMER

    2014-11-19 22:04:31121

    Controls exposure time and interval between exposures over ranges between 0.1 sec and 2 hours, independently of each other, by changing time constants ...

  • Frost alarm circuit diagram 1

    2014-11-19 21:51:55160

    The frost alarm circuit is composed of the frost detection circuit and the sound and light alarm circuit, and it is shown in Figure 1. Frost detection ...

  • IGBT Driving Circuit Composed Of EXB840

    2014-11-19 21:36:40170

    The IGBT driving circuit composed of EXB840 is shown in the picture....

  • Video_system_channel_control_box

    2014-11-19 20:42:55137

    In the channel control box of the single-coax video system (Fig. 3-14), a desired channel is encoded by three bits, set either by switches (as shown) o...

  • Logarithmic_limiting_amplifier

    2014-11-19 18:32:35144

    The SL3522 shown in this figure is a 7-stage succes sive-detection log amp for use in the 100- to 600-MHz range. With the values shown, the frequency r...

  • 1998 Mitsubishi FTO Electrical Wiring Diagram (STTH810FP)

    2014-11-19 17:39:0394

    This article describes the 1998 Mitsubishi FTO Electrical Wiring Diagram (STTH810FP). The content is very simple, very helpful. Components in this arti...

  • ESSURE_SENSITIVE_RESISTOR_CONTROLSARTIFICIAL_HAND

    2014-11-19 16:32:34125

    Control binary Q6-07 is triggered on through diode AAZ18 and reset by Q8 whose conduction threshold is determined by R1. Settings of R1, R2, and RC con...

  • Simplified Anti Toll Fraud Circuit Diagram

    2014-11-19 13:26:4470

    Simplified anti toll fraud circuit is shown in the above picture. The picture is a simplified anti toll fraud circuit. When the telephone is made norma...

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