Circuit Diagram

QM9403 three-phase motor protection circuit

Published:2011/12/7 2:04:00 Author:Ecco | Keyword: three-phase, motor protection circuit

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QM9403 single-phase motor protection circuit

Published:2011/12/7 1:49:00 Author:Ecco | Keyword: single-phase , motor protection

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QX3-13 Y-△ buck starter

Published:2011/12/7 1:54:00 Author:Ecco | Keyword: Y-△ buck Starter

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RSCW-102 rechargeable shaver circuit

Published:2011/12/7 1:57:00 Author:Ecco | Keyword: rechargeable shaver

RSCW-102razor is suitable for AC , DC , and it has a charging function , and it isshown inthe circuit .   (View)

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First-order bypass filter

Published:2011/12/6 1:49:00 Author:Ecco | Keyword: First-order , bypass filter

Design value Example :   (View)

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The first-order band-pass filter composed of an operational amplifier

Published:2011/12/6 20:44:00 Author:Ecco | Keyword: first-order, band-pass filter , operational amplifier

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8W amplifier

Published:2011/12/6 1:37:00 Author:Ecco | Keyword: 8W , amplifier

Although the TDA2030 can deliver 20 watts of output power, I deliberately reduced the output power to about 8 watts to supply 10 watt speakers. Input sensitivity is 200mV. Higher input levels naturally will give greater output, but no distortion should be heard. The gain is set by the 47k and 1.5k resistors. The TDA2030 IC is affordable and makes a good replacement amplifier for low to medium audio power systems. Incidentally, it is speaker efficiency that determines how 'loud' your music is. Speaker efficiency or sound pressure level (SPL) is usually quoted in dB/meter. A speaker with an SPL of 97dB/m will sound louder than a speaker with an SPL of 95dB/m.   (View)

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CA3080 variable gain amplifier circuit

Published:2011/12/6 20:26:00 Author:Ecco | Keyword: variable gain , amplifier

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15W amplifier

Published:2011/12/6 1:42:00 Author:Ecco | Keyword: 15W , amplifier

This amplifier uses a dual 20 Volt power supply and delivers 15 watts RMS into an 8 ohm load. Q1 operates in common emitter, the input signal being passed to the bias chain consisting of Q8, Q9, D6, D13 and D14. Q8 and Q9 provide a constant current through the bias chain to minimize distortion, the output stage formed by a discrete darlington pair (Q2,Q4) and (Q7,Q11). The last two transistors are power Transitors, specifically the 2N3055 and MJ2955. The 7.02K resistor, R16 was made using a series combination of a 4.7K, 680 Ohms, and two 820 Ohms. The 1.1K resistor, R3 was made using a 100 Ohms and a 1K resistor. You can use this circuit with any walkman or CD player since it is designed to take a standard 500mv RMS signal.   (View)

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Samsung T100/T108 mobile phone repairing physical diagram (2)

Published:2011/11/29 1:40:00 Author:Ecco | Keyword: Samsung , mobile phone repairing , physical diagram

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Precision unity-gain buffer circuit

Published:2011/12/5 21:23:00 Author:Ecco | Keyword: Precision, unity-gain, buffer

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Broadband operational amplifier

Published:2011/12/5 21:25:00 Author:Ecco | Keyword: Broadband , operational amplifier

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Wideband operational transconductance amplifier buffer circuit OPA660

Published:2011/12/5 21:24:00 Author:Ecco | Keyword: Wideband , operational, transconductance, amplifier, buffer

The internal principle circuit:   (View)

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Zero-drift inverting amplifier circuit

Published:2011/12/5 21:15:00 Author:Ecco | Keyword: Zero-drift , inverting amplifier

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Zero-drift operational amplifier circuit

Published:2011/12/5 21:14:00 Author:Ecco | Keyword: Zero-drift , operational amplifier

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Simple low-pass filter circuit

Published:2011/12/6 1:03:00 Author:Ecco | Keyword: Simple , low-pass filter

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DC motor current detection circuit for adjusting over threshold or not

Published:2011/12/6 1:03:00 Author:Ecco | Keyword: DC motor , current detection , over threshold

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High-voltage high -current operational amplifier circuit 3583

Published:2011/12/6 0:55:00 Author:Ecco | Keyword: High-voltage, high -current, operational amplifier

Figure (a) shows the methods for zerosetting ; Figure (b)shows the cylindrical package pin-out.   (View)

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High-voltage operational amplifier circuit with internal compensation

Published:2011/12/6 0:53:00 Author:Ecco | Keyword: High-voltage , operational amplifier , internal compensation

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Non- inverted amplifier circuit

Published:2011/12/6 1:19:00 Author:Ecco | Keyword: Non- inverted amplifier

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