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tda1521 produced 2.1 computer subwoofer speaker circuit diagram

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

tda1521 produced 2.1 computer subwoofer speaker circuit diagram
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

Photodiode signal conditioning circuit diagram of 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 produced 10W single-ended amplifier circuit diagram
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
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
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

wireless telephone bug
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VXO FM Bug

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

VXO FM Bug
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Simple Phone Tap 2

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

Simple Phone Tap 2
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Infinity Bug 2

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

Infinity Bug 2
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Infinity Bug 1

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

Infinity Bug 1
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FM Transmitter 1

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

FM Transmitter 1
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FM Telephone Bug 2

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

FM Telephone Bug 2
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Telephone Transmitter

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

Telephone Transmitter
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wireless microphone

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

wireless microphone
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Electronic Eavesdropping Devices Detector

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

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

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

Bug Detector with Beep
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Mini Bug Detector

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

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

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

Ultra Low Noise Precision High Speed Op Amps
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