Published:2011/8/19 2:34:00 Author:Jessie | Keyword: charging system
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Published:2011/8/19 2:34:00 Author:Jessie | Keyword: Cadillac backrest
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Published:2011/8/29 20:58:00 Author:Jessie | Keyword: car automatic transmission
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Published:2011/12/8 1:19:00 Author:Ecco | Keyword: Car headlight, HID lighting igniter
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Published:2011/9/16 1:10:00 Author:Rebekka | Keyword: car reversing anti-collision alarm
LM1812 is an excellent universal ultrasonic integrated device which can send and also receive the ultrasound. The chip includes: Pulse modulation type C oscillator, high-gain receiver, pulse modulation detector and noise suppressors detector system. It can be used for remote control, alarm, automatic door control and communications and can also be used for industrialmaterial or liquidlevel's measurement and control, range and thickness measurement, etc. It is widely applied in rain gear.
LM1812 Pin shape
LM1812 internal block diagram
LMl812 has the following characteristics: a. You can use a send / receive transducer to work. You can also use two transducers to send and receive ultrasound respectively. b. Devices is interchangeable. c. It is used without an external heat sink.
e. There is protection circuit inside the device. f. Detector output can drive 1A peak current. g. The range in the water is more than 30m. It is more than 6m in the air. h. Transmit power is up to 12w (peak). The following table shows the limit of LMl812 ultrasonic dedicated circuit operating parameters.
Extreme operating parameters
LM1812 Ultrasonic devices work dedicated schematic
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Car reversing anti-collision alarm circuit composed of LM1812.
The control distance is adjusted by the 5kΩ potentiometer and it can be controlled within 2 - 3m.
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Published:2011/12/9 0:14:00 Author:Ecco | Keyword: Chevrolet, Blazers , ignition , starting, charging
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Published:2011/12/9 1:29:00 Author:Ecco | Keyword: Audi , sedan, anti-lock braking , airbag system
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Published:2011/12/8 1:50:00 Author:Ecco | Keyword: 12V inverter , car
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Published:2011/12/8 1:38:00 Author:Ecco | Keyword: BMW speaker
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Published:2011/12/8 1:35:00 Author:Ecco | Keyword: BMW, nozzle heater
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Published:2011/12/8 1:34:00 Author:Ecco | Keyword: BMW , automatic memory seat
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Published:2011/11/10 3:16:00 Author:Ecco | Keyword: 200W, amplifier , radio , bus
The circuit shown in the chart uses TDA2005S dual low-frequency power amplifier integrated circuit for bus radio and PA circuits. The input end in the Figure can be connected to low-frequency voltage amplifier output stage in radio or microphone. Each TDA2005S outputs 10W power with four speakers. Two outputs can drive eight speakers, which can be located in different locations in the car. The total output power is up to 20W.
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Published:2011/11/10 3:17:00 Author:Ecco | Keyword: 200W , radio , amplifier , bus
The circuit shown in the chart uses TDA2005S dual low-frequency power amplifier integrated circuit for bus radio and PA circuits. The input end in the Figure can be connected to low-frequency voltage amplifier output stage in radio or microphone. Each TDA2005S outputs 10W power with four speakers. Two outputs can drive eight speakers, which can be located in different locations in the car. The total output power is up to 20W.
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Published:2011/10/18 21:16:00 Author:Ecco | Keyword: BMW , electric rearview mirror
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Published:2011/10/18 21:28:00 Author:Ecco | Keyword: BMW starter
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Published:2011/10/18 21:40:00 Author:Ecco | Keyword: BMW , wiper , washer
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Published:2011/10/18 3:49:00 Author:Ecco | Keyword: Southeast Delica, lightbus , warning instrumentation
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Published:2011/10/18 3:42:00 Author:Ecco | Keyword: Toyota , automatic transmission , D2 oil file
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Published:2011/9/26 2:22:00 Author:Rebekka | Keyword: Demodulation decoding , display circuit
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Published:2011/9/26 2:17:00 Author:Rebekka | Keyword: Pyroelectric detect alarm system
The picture (A) shows the detection and transmission circuit;The picture (B) shows the receiver alarm circuit. (View)
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