Circuit Diagram

AUTO_RADIO_AMPLIFIER

Published:2009/6/28 23:29:00 Author:May

Circuit shown per-mits operation of Slgnetics NE540 power driver front single-polarity 12-V supply of auto. Bipolar supplies for differential inputs of 540 are achieved by returning inputs to half of available supply or 6 V. Load is AC coupled because am piif et has DC gain of 1, and amplifier output is therefore 6 VDC. 39-ohm supply resistors are selected for minimum crossover distortion.- Signetics Analog Data Manual, Signetics, Sunnyvale, CA, 1977, p 764.   (View)

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74 Series digital circuit of 74365A/366A six buffer / bus driver(three-state)

Published:2011/8/1 1:22:00 Author:Lucas | Keyword: 74 Series , digital circuit , six buffer , bus driver, three-state

Three-state output; 365 is the in-phase output; 366 is the inverted output; G1 and G2 are the public control.   (View)

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Ultra_lown_noise_5_to_±15_V_converter

Published:2009/7/25 1:59:00 Author:Jessie

This circuit converts 5V to ±15V at 75mA,with an output noise of less than 30μV p-p(2ppm)   (View)

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WIPER_DELAY_CONTROL

Published:2009/6/28 23:27:00 Author:May

555 timer prvides selsctavel delay tiem between sweeps of wiper blades driven by motor in negative-ground system. Article also gives circuit modification for positive-ground autos. Delay time can ve varied between 0 and 22s. Timer uses feedback signal from cam-operated switch of motor to synchronize delay time with position of wiper blades.-J.Okolwicz, Synchronous Timing Loop Controls Windshield Wiper Delay, Electronics, Nov. 24, 1977, P 115 and 177.   (View)

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Norton_fourth_order_250_kHz_bessel_filter

Published:2009/7/25 1:57:00 Author:Jessie

This circuit uses two sections of a Norton to form a Bessel filter.   (View)

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The light detection single power source circuit

Published:2011/7/21 2:53:00 Author:Seven | Keyword: single power source

The light sensor OPT209 LED computing amplifier integrated circuit Functions: used in positioning and approaching sensors, fog detection, photo analysis and medical devices, etc.   (View)

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74 Series digital circuit of 74367A/368A six buffer / bus driver

Published:2011/8/1 1:20:00 Author:Lucas | Keyword: 74 Series, digital circuit, six buffer , bus driver

Three-state output; 367 is the in-phase output; 368 is the inverted output; G1 non-controls four doors (1 ~ 4), and G2 non-controls the other two doors.   (View)

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Low_noise_5__to_±15_V_converter

Published:2009/7/25 1:57:00 Author:Jessie

This circuit converts 5 V to ±15 V at 250 mA, with an output noise of about 200 μV peak-to-peak.   (View)

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The light detecion 4-20mA current transformer circuit

Published:2011/7/21 2:56:00 Author:Seven | Keyword: light detecion, current transformer

Figure 2-141. The light detecion 4-20mA current transformer circuit   (View)

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LATCH_COMPARATORS_FORM_3_BIT_A_D_CON_VERTER

Published:2009/6/28 23:27:00 Author:May

Seven Advanced Micro Devices AM686 comparators are arranged for direct parallel conversion of rapidly changing input signals, without prior sample-and-hold conditioning. Comparators feed Schottky TTL binary encoder logic for encoding to 3-bit offset binary. Quantization process is monitored by D/A converter. Article describes operation in detail and gives performance graphs which show freedom from output glitching at conversion speeds under 12 ns.—S.Dendinger,Try the Sampling Comparator in Your Next A/D Interface Design,EDN Magazine，Sept．20，1976，p 91—95．   (View)

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Norton_high_gain_general_purpose_amplifier

Published:2009/7/25 1:55:00 Author:Jessie

This circuit uses two sections of a Norton to form a general-purpose amplifier with voltage gains of 1000 over an 8-MHz bandwidth.   (View)

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Norton_high_yoerforrnance_video_amplifier

Published:2009/7/25 1:54:00 Author:Jessie

This circuit shows a Norton used as a noninverting video amplifier: Typical voltage gain is 20 dB, with a -3-dB bandwidth from 2.5 Hz to 25 MHz, and a 4-V pp output swing. Differential phase error is less than 1°, and differential gain error is less than 2% at 3.58 MHz. A typical signal source can be either detected video from a receiver or possibly from a camera signal.   (View)

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2_W_WITH_IC

Published:2009/6/28 23:26:00 Author:May

Uses Motorola MFC9020 audio power amplifier to give maximum output of about 2 W for 16-ohm loudspeaker. Used in autopatch system for FM repeaten-R. B. Shreve, A Versatile Autopatch System for VHF FM Repeaters, Ham Radio, July 1974, p 32-38.   (View)

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74 Series digital circuit of 74LS374 octal D flip-flop(tristate)

Published:2011/7/25 3:31:00 Author:Lucas | Keyword: 74 Series , digital circuit , octal D flip-flop, tristate

Three-state output: all the load is full parallel stored; it has buffer control input; clock pulse positive edge is triggered; 74LS364 is the similar to 74LS374 but has the MOS interface, high VOH. Q0 = the output level before establishing the steady-state input conditions.   (View)

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Off_line_multiple_output_flyback_converter

Published:2009/7/25 1:54:00 Author:Jessie

This circuit provides +5 V at 1 A, +12 V at 0.2 A, and -12 V at 0.2 A from a 103- to 129-Vac line input. Figure 4-38B shows component source information.   (View)

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Norfort_voltage_controlled_low_pass_filter

Published:2009/7/25 1:52:00 Author:Jessie

This circuit shows a Norton used as a voltage-controlled low-pass filter, where the 3-dB closed-loop corner frequency is set by ISET input current.Figure 11-16B shows the relationship of ISET and corner frequency. Note that as the compensation capacitor is increased, or ISET is decreased, the maximum slew ratd is decreased.   (View)

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LOW_COST_30_W

Published:2009/6/28 23:25:00 Author:May

Economical compromise gives 30 W into 8-ohm load at 0.1% distortion (mainly second harmonic) and hum level of -50 dBW. Article covers design and operation of cir, cuit in detail.-P. L, Taylot, Audio Power Am-plifier, Wireless Wolld, June 1973, p 301-302,   (View)

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70_dB_GAIN_WITH_15_V

Published:2009/6/28 23:24:00 Author:May

Operates from sihgle penlight qell at current drain of 0.5 mA. ldeal as self-contained unit inserted in microphone cable. Q2-Q4 form 70-dB voltage amplifier. Q5 is detector, and Q6 is emitter-follower driving AGC transistor Q1.3-dB bandwidth is about 100 Hz to 8 kHz. Full output is about 200 mVRMS, while low output terminal is 1 mVRMS.-C.Hall, Low-Voltage Audio AGO Amplifier, Ham Radio, Dec. 1973, p 32-34.   (View)

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74 Series digital circuit of 74LS385, 74F385 four serial adder / subtractor

Published:2011/8/1 1:15:00 Author:Lucas | Keyword: 74 Series , digital circuit , four serial adder , subtractor

It has buffered clock and direct clear input; 2's complement independent add/ subtract and four independent outputs are related to A and B inputs controlled by S / A console.   (View)

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Flyback_converter

Published:2009/7/25 1:51:00 Author:Jessie

This circuit provides a -40-V output at 0.18 A from a +12-V input.Component source information is given in Fig. 4-37B.   (View)

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