激光发射器/接收器电路 LASER Transmitter/
激光发射器/接收器电路 laser transmitter/receiver
this set of two circuits from the basis for a very simple light wave transmitter. a laser beam is modulated and then aimed at a receiver that demodulates the signal and then presents the information (voice, data, etc..). the whole thing is very easy to build and requires no specialized parts execpt for the laser itself. lasers are available from mwk industries.
schematic of receiver
parts:
part
total qty.
description
substitutions
c1, c2
2
0.1uf ceramic disc capacitor
c3
1
100uf 25v electrolytic capacitor
r1
1
100k ohm 1/4w resistor
r2
1
1m ohm 1/4w resistor
r3
1
10k pot
q1
1
npn phototransistor
u1
1
741 op amp
u2
1
lm386 audio amp
spkr1
1
8 ohm speaker
t1
1
8 ohm:2k audio transformer
misc
1
wire, board, knob for r3, laser tube and power supply
notes:
1. in the transmitter schematic, no ballast resistor is shown because most small laser power supplies already have one built in. yours may differ, and a resistor may be needed.
2. the receiver should be kept away from bright lights. you may want to put a piece of wax paper in front of q1 to keep the laser from swamping it.
3. in order to get any decent amount of modulation, you may need to drive t1 with more then a watt.
4. the circuit can be made to transmit computer data with the use of two modem chips.
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this set of two circuits from the basis for a very simple light wave transmitter. a laser beam is modulated and then aimed at a receiver that demodulates the signal and then presents the information (voice, data, etc..). the whole thing is very easy to build and requires no specialized parts execpt for the laser itself. lasers are available from mwk industries.
schematic of receiver
parts:
part
total qty.
description
substitutions
c1, c2
2
0.1uf ceramic disc capacitor
c3
1
100uf 25v electrolytic capacitor
r1
1
100k ohm 1/4w resistor
r2
1
1m ohm 1/4w resistor
r3
1
10k pot
q1
1
npn phototransistor
u1
1
741 op amp
u2
1
lm386 audio amp
spkr1
1
8 ohm speaker
t1
1
8 ohm:2k audio transformer
misc
1
wire, board, knob for r3, laser tube and power supply
notes:
1. in the transmitter schematic, no ballast resistor is shown because most small laser power supplies already have one built in. yours may differ, and a resistor may be needed.
2. the receiver should be kept away from bright lights. you may want to put a piece of wax paper in front of q1 to keep the laser from swamping it.
3. in order to get any decent amount of modulation, you may need to drive t1 with more then a watt.
4. the circuit can be made to transmit computer data with the use of two modem chips.
苹果手机经常死机或自动重启应该如何解决
集成电路设计企业泰凌微科创板IPO获受理
积塔半导体联合制作的第一款车规750V IGBT芯片通过车规级验证
单芯冷却风扇方案设计
大功率LED照明电源设计方案
激光发射器/接收器电路 LASER Transmitter/
首尔半导体提起的专利侵权案获胜诉 双方达成和解并支付专利使用费
智能化薄膜在线检测仪的原理及功能
电源合理应用之输入保险丝要求
如何设计一个简单的4S电池组
DigitalOptics公司推出MEMS自动对焦摄像头模块mems|cam
2019年将是区块链联盟最关键的一年
东风岚图与华为达成战略合作 或为解决方案合作模式
晶体管点焊机出现噪音如何解决
乐歌V9多功能单车评测 适合全家一起使用
什么是数据采集?
贝启科技RK3588核心板通过严格高低温环境测试
Swingby协议在区块链中的作用介绍
前传市场逐步开启，半有源成为WDM前传部署型态热点
英飞凌ORIGA 验证芯片采用Intel vPro技术