Published:2011/9/16 1:02:00 Author:Rebekka | Keyword: ultrasonic transmitting, receiving sensor
T/R-40 series of ultrasonic sensors works by piezoelectric effect. Usually we also call it transducer. This type of transducer is suitable for anti-theft alarm and remote.
The shape, size and circuit symbols of T/R-40-XX series of ultrasonic sensors.
The ultrasonic transmitter circuit composed of discrete structure.
T/R-40-16 will emit a string of 40kHz ultrasonic signals. The circuit voltage is 9V, operating current is 25mA, control distance can up to 8m.
Ultrasonic transmitter circuit composed of 555.
The 40kHz oscillation pulse drives T-40-16 output from 555 of the pin 3, that makes it emit 40kHz ultrasonic signal. Circuit voltageis 9V, operating currentis 40 ~ 45mA, the control distance is more than 8m.
Bistable ultrasonic receiver circuit
Universal ultrasonic receiver circuit. (View)
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Published:2011/12/9 0:50:00 Author:Ecco | Keyword: JTAG emulator
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Published:2011/12/9 0:49:00 Author:Ecco | Keyword: CD-ROM interface , schematic
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Published:2011/12/9 0:49:00 Author:Ecco | Keyword: high-performance , multimeter
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Published:2011/12/8 20:21:00 Author:Ecco | Keyword: 4GHZ, oscillator, transistor
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Published:2011/12/9 1:30:00 Author:Ecco | Keyword: Small , FM transmitter, wireless speaker
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Published:2011/12/8 20:23:00 Author:Ecco | Keyword: Small , electronic coupling oscillator
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Published:2011/12/8 20:43:00 Author:Ecco | Keyword: LCD digital thermometer
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Published:2011/12/8 20:46:00 Author:Ecco | Keyword: Active servo , power amplifier , lifting subwoofer
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Published:2011/12/8 20:49:00 Author:Ecco | Keyword: anti-theft system, radio , infrared , remote control , decoding
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Published:2011/12/8 20:51:00 Author:Ecco | Keyword: Adjustable , voltage-stabilizing circuit , current limiting, protection function
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Published:2011/12/8 20:19:00 Author:Ecco | Keyword: Several vi transformation , constant current source
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Published:2011/12/8 20:20:00 Author:Ecco | Keyword: Memory , internal memory
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Published:2011/11/3 2:06:00 Author:Ecco | Keyword: Y-△ starting , motor , without power switch
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Published:2011/12/8 0:57:00 Author:Ecco | Keyword: power circuit , COMPAQ , TTL , color monitor
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Published:2011/12/7 20:34:00 Author:Ecco | Keyword: power , COMPAQ, VGA , multi-frequency monitor
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Published:2011/12/7 2:08:00 Author:Ecco | Keyword: Variable voltage, start-up circuit
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Published:2011/12/7 2:11:00 Author:Ecco | Keyword: Variable voltage , start-up
This starter is suitablefor 11 ~ 22kW motor.Because the current islarge,it uses three current transformers E to provide mutual inductance current.
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Published:2011/12/7 2:12:00 Author:Ecco | Keyword: Autoformer, step-down start
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Published:2011/12/7 2:06:00 Author:Ecco | Keyword: LOGO module , controlling , autotransformer , step-down start
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