the demodulator circuit of the radio frequency :CA3189E IF subsystem circuit

Published:2011/8/12 21:12:00 Author:Ariel Wang | Keyword: Demodulator, radio frequency, IF, subsystem

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the optical tester of 555

Published:2011/8/12 21:10:00 Author:Ariel Wang | Keyword: 555, optical tester

It is the optical tester circuit.It consists of photoelectric sensor,monoflop and audio circuit.The photoelectric sensor uses photocell 2CR33.   (View)

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the amplier circuit of the radio frequency :Voltage-tuned Dual-gate MOSFET RF amplifier circuit

Published:2011/8/12 21:02:00 Author:Ariel Wang | Keyword: amplier, Voltage-tuned , Dual-gate, MOSFET, RF , amplifier

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the amplier circuit of the radio frequency :JFET RF amplifier circuit

Published:2011/8/12 21:00:00 Author:Ariel Wang | Keyword: amplier, JFET , RF, amplifier

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the amplier circuit of the radio frequency :Common base JFET RF amplifier circuit

Published:2011/8/12 20:59:00 Author:Ariel Wang | Keyword: amplier, Common base , JFET, RF, amplifier

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the amplier circuit of the radio frequency :cascode RF amplifier circuit

Published:2011/8/12 20:58:00 Author:Ariel Wang | Keyword: amplier, RF, amplifier

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Input choice relation table circuit

Published:2011/8/10 7:24:00 Author:Fiona | Keyword: Input choice relation

electrical level of the input choice terminal selection objects the 2 pin L (<0.5 V) the 12 pin's input singal H (>2.0 V) the3pin's input singal   (View)

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Format control relation figure circuit

Published:2011/8/9 23:43:00 Author:Fiona | Keyword: Format control relation

SYS1’S 11 pin SYS2’S 10 pin COLOR SYSTEM L L PALM L H PALB、G、H、D、I H L NTSCN H H PALN   (View)

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Output choice relation table circuit

Published:2011/8/10 7:18:00 Author:Fiona | Keyword: Output choice relation

electrical level of the input choice terminal selection objects the 15 pin L (<0.5 V) comb type filter Y/C separation signal H (>2.0 V) S terminal Y/C separation signal   (View)

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Positive buck /boost type LED constant current driver circuit

Published:2011/7/20 6:51:00 Author:Fiona | Keyword: buck /boost, constant current, driver

working principleThe input circuit consists of the fusible resistor R1,VD1,VD2,C1,CZ and filter inductor u;power adjustment circuit consists of LNK3OGP,energy storage inductor L2,VD3,R2,C4 and C5.When LNK306 turns on, the input current I constitutes a loop through (LNK306) D → (LNK306) S → L2 → C2 (-) and stores the input current IIN in inductor L2 (the inductor current linear increases by UI / LI),the polarity is that up is positive and under is negative;when LNK306 is off,it can't be mutated because of the inductor current(inductor current decreases linearly by UI/L1),the polarity is that up is negative and under is positive;the energy stored in L2 constitutes a loop through by the lower end of L2(ground) →LED (load) →VD3 →R2 →the upper end of L2.   (View)

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Remote Control TX7004

Published:2011/8/9 17:30:00 Author:Vicky | Keyword: Remote Control

Product Specification: Modulation mode: ASK/OOK (amplitude modulation) Work voltage: DC 12V (27A/12V Battery) Work current: 10mA Work frequency: 315;433MHZ;(stable frequency for audiometer) Transmission range: >200M (in spacious area, the sensibility of the receptor is above -100dbm) Coding type: fixed/scroll/learning code Key button: alternative between key 2 and key 4 Color of appearance: black Coding types: coder and decoder: PT2260/PT2262 (pad); learning code: eV1527/PT2240B/scroll code: HCS101/HCS301 Product features: Cheap; small size of the handle of emitter; exquisite appearance; power-saving; stable work performance; black appearance; settable rubber mat number.   (View)

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ASK/OOK Emitter module TX6

Published:2011/8/9 17:31:00 Author:Vicky | Keyword: ASK/OOK Emitter module

The module is composed by 315MHz or 433.92MHz audiometer oscillator. It belongs to ASK modulation emitter. It can be matched with frequently-used super-regenerative receiving circuit and superheterodyne receiving circuit. The frequency-stability is relatively high. It can be connected with coding chips and data transmission end in the outer side. It only consumes current when the button is pressed down, otherwise it consumes no current. It is easy to use. Product specification Communication mode: ASK amplitude modulation Working frequency: 315MHZ～433.92MHZ Static current: ≤0.1UA Emitting current: 10mA Working voltage: DC 3～12V Working temperature: -20℃～+60℃ Size of appearance: 11x16x5.5MM Frequency Stability: ±75KHZ Emitting Power: 15dbm Emitting distance: 500m (in the open space) Emitting rate: 3KB/SInput signal: TTL electrical level   (View)

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Superheterodyne receiving module RXB4

Published:2011/8/9 17:33:00 Author:Vicky | Keyword: Superheterodyne Receiving Module

The module uses crystal frequency stabilization technology. It has relatively high frequency stability and uses SYN400R as the superheterodyne receptor. The receiving sensitiveness is high, the performance is stable, the current is low, the usage is easy, the size is small and it is cheap. The short antenna can be connected in the outside so that it is convenient to use. It can transmit direct current to the 2500BPS signal. Product specification Working voltage: DC 2.7~5.5V Transmission rate: 2~4KBPS Working mode: ASK amplitude modulation Working current: 5MA Receiving sensitiveness: -105dBm Size of appearance: 43×12×5mm Working temperature: -40℃~+85℃ Working frequency: 315 MHz;433 MHz; Output frequency stability: ±30PBM Output signal: CMOS electrical level Ranking of pins: GND、DATA、DATA、+5V 、 +5V、GND、GND、ANT Function of pins: GND: ground connection DATA: receiving data outputDATA: receiving data output+5V : working power，DC 5V ; +5V : working power，DC 5V ; GND: ground connectionGND: ground connection ANT: antenna   (View)

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Superheterodyne receiving module RXB3

Published:2011/8/9 17:35:00 Author:Vicky | Keyword: Superheterodyne receiving module

The module uses crystal frequency stabilization technology. It has relatively high frequency stability and uses SYN400R as the superheterodyne receptor. The receiving sensitiveness is high, the performance is stable, the current is low, the usage is easy, the size is small and it is cheap. The short antenna can be connected in the outside so that it is convenient to use. It can transmit direct current to the 2500BPS signal. Product specification Working voltage: DC 2.7~5.5V Transmission rate: 2~4KBPS Working mode: ASK amplitude modulation Working current: 2MA Receiving sensitiveness: -99dBm Size of appearance: 30×11×5mm Working temperature: -40℃~+85℃ Working frequency: 315 MHz;433 MHz; Output frequency stability: ±30PBM Output signal: CMOS electrical level Ranking of pins: ANT、 +5V、SHUT、DATA、GND Function of pins: ANT: antenna +5V : working power DC 5V ; SHUT: power-saving module； DATA: receiving data output VSS: ground connection   (View)

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Superheterodyne receiving module RXB5

Published:2011/8/9 17:36:00 Author:Vicky | Keyword: Superheterodyne receiving module

The module uses crystal frequency stabilization technology. It has relatively high frequency stability and uses RXB5 as the superheterodyne receptor. The receiving sensitiveness is high, the performance is stable, the current is low, the usage is easy, the size is small and it is cheap. The short antenna can be connected in the outside so that it is convenient to use. It can transmit direct current to the 9600BPS signal. Product specification Working voltage: DC 2.7~5.5V Transmission rate: 0KBPS～9.6KBPS Working mode: ASK amplitude modulation Working current: 6mA Receiving sensitiveness: -102dBm Size of appearance: 30×11×5mm Working temperature: -20℃~+70℃ Working frequency: 315 MHz; 433 MHz; Output signal: CMOS electrical level Ranking of pins: ANT、 GND、GND、DATA、VDD Function of pins: ANT: antenna GND: ground connectionGND: ground connectionDATA: receiving data output, and presenting high-resistance state when there is no signalVDD : working power   (View)

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Superheterodyne receiving module RXB6

Published:2011/8/9 17:39:00 Author:Vicky | Keyword: Superheterodyne receiving module

This RF wireless high-frequency receiving module, RXB6, is of high sensitiveness, which reaches -110dBm. It adopts ASK receiving mode, which is available for remote control, far- end control, remote control vehicle, data transmission, anti-theft alarm, home appliance control, wireless toy, vehicle-burglar alarm, wireless backup radar, remote garage gate control , remote motor-driven curtain, flexible door , remote strobe control. It is also an ideal choice GSM/GPS vehicular system set, industry control and systems of high complicated environmental requirement. It can take the place of infrared receptor. It can receive signals from omnidirectional direction and is easy to be added to general remote controls. Key Feature: 315/433.92/868/914.5MH receiving module Built-in AGC Low working voltage: 3.0V~5.5V Low current: 315MHZ/433.92MHZ(it is available to be connected to power-saving mode in the outside and the start-up time is 250µs; the low-current shutdown mode is 30mA, which effectively saves power) High sensitiveness: -110dBm Working temperature: -40℃~+85℃ Size of the appearance: 43.2×12.3×5mm   (View)

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Superheterodyne Receiving Module RXB10

Published:2011/8/9 17:40:00 Author:Vicky | Keyword: Superheterodyne Receiving Module

This RF wireless high-frequency receiving module, RXB10, is of high sensitiveness, which reaches -107dBm. The size is very small. It adopts ASK receiving mode, which is available for remote control, far- end control, remote control vehicle, data transmission, anti-theft alarm, home appliance control, wireless toy, vehicle-burglar alarm, wireless backup radar, remote garage gate control , remote motor-driven curtain, flexible door , remote strobe control. It is also an ideal choice GSM/GPS vehicular system set, industry control and systems of high complicated environmental requirement. It can take the place of infrared receptor. It can receive signals from omnidirectional direction and is easy to be added to general remote controls. Key Feature: Low-price 315/433.92/ receiving module Built-in AGC Low working voltage: 3.0V~5.5V Low current: 5.7mA High sensitiveness: -107dBm Working temperature: -20℃~+85℃ Size of the appearance: 33×11×5mm   (View)

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Superheterodyne Receiving Module RXB11

Published:2011/8/9 17:42:00 Author:Vicky | Keyword: Superheterodyne Receiving Module

This RF wireless high-frequency receiving module, RXB11, is of high sensitiveness, which reaches -107dBm. It adopts ASK receiving mode, which is available for remote control, far- end control, remote control vehicle, data transmission, anti-theft alarm, home appliance control, wireless toy, vehicle-burglar alarm, wireless backup radar, remote garage gate control , remote motor-driven curtain, flexible door , remote strobe control. It is also an ideal choice GSM/GPS vehicular system set, industry control and systems of high complicated environmental requirement. It can take the place of infrared receptor. It can receive signals from omnidirectional direction and is easy to be added to general remote controls. Key Feature: Low-price 315/433.92/ receiving module Built-in AGC Low working voltage: 3.0V~5.5V Low current: 5.7mA High sensitiveness: -112dBm Working temperature: -20℃~+85℃ Size of the appearance: 43.2×12.3×5mm   (View)

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ASK/OOK Small-size Receiving Module RXB 14

Published:2011/8/9 17:43:00 Author:Vicky | Keyword: ASK/OOK Small-size Receiving Module

This RF wireless high-frequency receiving module, RXB14, is of high sensitiveness, which reaches -107dBm.The size is very small. It adopts ASK receiving mode, which is available for remote control, far- end control, remote control vehicle, data transmission, anti-theft alarm, home appliance control, wireless toy, vehicle-burglar alarm, wireless backup radar, remote garage gate control , remote motor-driven curtain, flexible door , remote strobe control. It is also an ideal choice GSM/GPS vehicular system set , industry control and systems of high complicated environmental requirement. It can take the place of infrared receptor. It can receive signals from omnidirectional direction and is easy to be added to general remote controls. Key Feature: Low-price 315/433.92/ receiving module Built-in AGC Low working voltage: 3.0V~5.5V Low current: 5.7mA High sensitiveness: -112dBm Working temperature: -20℃~+85℃ Size of the appearance: 12×10.5×5mm   (View)

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FSK/FM Receiving Module RXB6

Published:2011/8/9 17:45:00 Author:Vicky | Keyword: FSK/FM Receiving Module

Specification: Frequency: 433.92/868MHZ Working Voltage: 5V Current dissipation: 7mA Sensitiveness: -108dBm Modulation mode: FSK Applied fields: automotive-electronics, industrial control, and vehicular remote control etc.   (View)

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