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Index 47

The precision composite buffer circuit compose of the MC1458

Published:2011/5/8 9:06:00 Author:TaoXi | Keyword: precision composite buffer

The precision composite buffer is as shown. The pre-stage of the circuit is the voltage follower that is composed of the precision op amp LM11, the parallel part of rear-stage uses the general dual op amp MC1458 (or MC1558 dual operational amplifier). The input signal adds to the same-phase input port (pin 3) of the pre-stage through R1 (10kΩ), pin 8 links the 330pF compensation capacitor C1 to achieve the over compensation, the objective is to improve the bandwidth and slew rate of the Parallel output buffer stage, sometimes we connect the 100pF capacitor C2 between the pre-stage's output port (pin 6) and the inverting input port (pin 2) to improve the stability of the circuit. Between the pre-stage's output port and the inverting input port, there are two diodes D1 and D2 (model is 1N914), the role is to clamp when LM11 is overdriven, to reduce the blocking tendency and to minimize the recovery time. Add the 10kΩ resistor R2 between the circuit's total output port and the pre-stage LM11's inverting input port, this resistance leads the depth voltage series negative feedback to make the op amp working in linear state. The main parameters (typical) of the dual op amp 1458 (1558): (View)

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Dujiang brand 802 type radio principle circuit

Published:2011/5/8 22:07:00 Author:Christina | Keyword: Dujiang, radio, principle circuit

The Dujiang brand 802 type radio principle circuit is as shown: (View)

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General complex paralleling buffer (LF347) circuit

Published:2011/5/8 7:20:00 Author:TaoXi | Keyword: General, complex, paralleling, buffer

General complex paralleling buffer (LF347) circuit

The complex paralleling buffer is composed of two or more amplifier outputs, as the figure shown. The output current of circuit is the sum of several paralleling op amps' output current. A1 and A2 can use the general integrated quad op amp LF347 (or LM324, OP496, TL35074.etc). The main parameters of the integrated quad op amp LF347: (View)

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Ring tone repeater circuit

Published:2011/5/6 2:59:00 Author:TaoXi | Keyword: Ring tone, repeater

The Ring tone repeater circuit is as shown. (View)

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Tone control circuit compose of the LM301AN

Published:2011/5/6 9:06:00 Author:TaoXi | Keyword: Tone control

Tone control circuit compose of the LM301AN
(View)

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3 Light-operated Silicon-controlled Zero Passed Switch Circuit

Published:2011/5/6 7:32:00 Author:Sue | Keyword: Light-operated, Silicon-controlled, Zero Passed, Switch

3 Light-operated Silicon-controlled Zero Passed Switch Circuit
(a)Zero passed alternating current switch (1) (b)Zero passed alternating current switch (2) (c)Light-operated time-delayed switch (d)Street lamps automatic control switch (e)Corridor lamps energy saving automatic control switch (View)

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Logarithmic compression digital audio processor (DAC76, MN5110) circuit

Published:2011/5/6 7:47:00 Author:TaoXi | Keyword: Logarithmic compression, digital audio processor

The Logarithmic compression digital audio processor (DAC76, MN5110) circuit is as shown in the figure. (View)

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Touch Controlled Silicon Zero Passed Switch Circuit (1)

Published:2011/5/6 7:27:00 Author:Sue | Keyword: Touch, Controlled, Silicon, Zero Passed, Switch

Touch Controlled Silicon Zero Passed Switch Circuit (1)
Touch (View)

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Small active audio circuit

Published:2011/5/6 7:37:00 Author:TaoXi | Keyword: Small, active audio

The Small active audio circuit is as shown: (View)

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Pressure Sensor Detector Circuit

Published:2011/5/7 1:45:00 Author:Sue | Keyword: Pressure, Sensor, Detector

Pressure Sensor Detector Circuit
Nonlinearity:0.05%FSO(typical value) 3/16 pressure interface Standard ceramic substrate with temperature compensating resistance 1.5mA constant current(after amplifying can output full scare 3.00Vdc) ps.Psi=6.895kPa Pin Function: 4:+output 5:+input 6:-input 7:gain adjustment 9:gain adjustment 10:+output (View)

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CMOS 555 Equivalent Functional Block Diagram Circuit

Published:2011/5/6 2:18:00 Author:Sue | Keyword: Equivalent, Functional Block Diagram

CMOS 555 Equivalent Functional Block Diagram Circuit
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Mass V-I Converting Circuit

Published:2011/5/6 21:36:00 Author:Sue | Keyword: Mass, V-I, Converting

Mass V-I Converting Circuit
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Modulation Driving Circuit

Published:2011/5/6 21:43:00 Author:Sue | Keyword: Modulation, Driving

Modulation Driving Circuit
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Simplified Radio Frequency Circuit

Published:2011/5/6 2:40:00 Author:Sue | Keyword: Simplified, Radio Frequency

Simplified Radio Frequency Circuit
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Precise Voltage And Current Transmitter Circuit

Published:2011/5/6 3:24:00 Author:Sue | Keyword: Precise, Voltage, Current, Transmitter

Precise Voltage And Current Transmitter Circuit

Application: It is used in pressure and temperature transmitter, industrial process control and so on. Figure 3-62 Application Basic Junction Circuit Basic Junction Circuit sensor inputs a voltage of 0-10V and outputs a current of 4-20mA. As seen in the figure below is the relation between variation range of input voltage, output current and pin. (View)

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Lamp Touch Switch Circuit

Published:2011/5/6 2:11:00 Author:Sue | Keyword: Lamp, Touch, Switch

Lamp Touch Switch Circuit
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Principle of Audio Circuit

Published:2011/5/6 1:09:00 Author:Sue | Keyword: Principle, Audio Circuit

Principle of Audio Circuit
(View)

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Temperature Controlled Silicon Zero Passed Switch Circuit

Published:2011/5/6 7:31:00 Author:Sue | Keyword: Temperature, Controlled, Silicon, Zeri Passed, Switch

Temperature Controlled Silicon Zero Passed Switch Circuit
(View)

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V-F Converting Circuit

Published:2011/5/6 2:47:00 Author:Sue | Keyword: V-F, Converting

V-F Converting Circuit
Voltage/FrequencyConverting Circuit Application: It is used inConverting Circuit with input voltage of 0-5V and output frequency of 100HZ-1MHZ. (View)

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Current Receiving Circuit

Published:2011/5/6 3:04:00 Author:Sue | Keyword: Current, Receiving

Current Receiving Circuit
Application: It is used in process control, industrial control, factory automation, data acquisition and so on. Figure 3-100 Thermocouples converting circuit (View)

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