Circuit Diagram

tda1521 produced 2.1 computer subwoofer speaker circuit diagram

Published:2013/2/18 0:43:00 Author:Ecco | Keyword: computer subwoofer speaker

This circuit uses a tda1521 as a two-channel power amplifier, and another tda1521 btl output is used as subwoofer amplifier. ic1 and ic2 may use the ne5532, jrc4558 or tl082. You can also use other high-end op amp such as op275, lt1057, opa2604, etc. But for computer speaker, the ordinary op put is enough.   (View)

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Photodiode signal conditioning circuit diagram of barcode scanner

Published:2013/2/18 0:46:00 Author:Ecco | Keyword: Photodiode signal conditioning , barcode scanner

The circuit is used for processing the level signal of the photodiode in barcode scanner, the current output of IC1 will be converted into a voltage output and further being amplified in the IC2. The amplified signal is sent to the peak holding circuit, thereby establishing a reference level, then the comparator output is 0 or 1.   (View)

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6C33C-B produced 10W single-ended amplifier circuit diagram

Published:2013/2/18 0:57:00 Author:Ecco | Keyword: 10W, single-ended amplifier

6C33C-B is a low internal resistance, linear tri-polar bile. Filament voltage is 6.3V/12.6V, filament current is 6.6A/3.3A, screen consumption is 60W, 26 to 40mA / V, transconductance amplification factor is 24, the single-ended amplifier with 6C33C-B has mellow and sweet tone. The circuit is shown as figure, the former uses high μ tube 6SQ7GT for voltage amplification to promote with 6C5P as cathode follower.   (View)

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Signal acquisition and processing circuit diagram

Published:2013/2/18 0:10:00 Author:Ecco | Keyword: Signal acquisition , processing

Signal acquisition and processing circuit diagram is shown as figure.   (View)

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Band pass filter diagran with operational amplifier

Published:2013/2/18 0:06:00 Author:Ecco | Keyword: Band pass filter, operational amplifier

Band pass filter diagran with operational amplifier is shown as figure.   (View)

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wireless telephone bug

Published:2013/2/17 20:34:00 Author:muriel | Keyword: wireless telephone bug

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VXO FM Bug

Published:2013/2/17 20:33:00 Author:muriel | Keyword: VXO FM Bug

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Simple Phone Tap 2

Published:2013/2/17 20:31:00 Author:muriel | Keyword: Simple Phone Tap

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Infinity Bug 2

Published:2013/2/17 20:30:00 Author:muriel | Keyword: Infinity Bug

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Infinity Bug 1

Published:2013/2/17 20:29:00 Author:muriel | Keyword: Infinity Bug

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FM Transmitter 1

Published:2013/2/17 20:29:00 Author:muriel | Keyword: FM Transmitter

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FM Telephone Bug 2

Published:2013/2/17 20:28:00 Author:muriel | Keyword: FM Telephone Bug

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Telephone Transmitter

Published:2013/2/17 20:27:00 Author:muriel | Keyword: Telephone Transmitter

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wireless microphone

Published:2013/2/17 20:27:00 Author:muriel | Keyword: wireless microphone

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Electronic Eavesdropping Devices Detector

Published:2013/2/17 20:25:00 Author:muriel | Keyword: Electronic Eavesdropping Devices, Detector

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CRYSTAL LOCKED FM BUG

Published:2013/2/17 20:22:00 Author:muriel | Keyword: CRYSTAL LOCKED, FM BUG

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Bug Detector with Beep

Published:2013/2/17 20:21:00 Author:muriel | Keyword: Bug Detector, Beep

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Mini Bug Detector

Published:2013/2/17 20:21:00 Author:muriel | Keyword: Mini Bug Detector

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HIGH POWER FM MIC

Published:2013/2/17 20:19:00 Author:muriel | Keyword: HIGH POWER, FM MIC

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Ultra Low Noise Precision High Speed Op Amps

Published:2013/2/17 20:15:00 Author:muriel | Keyword: Ultra , Low Noise, Precision , High Speed, Op Amps

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