您当前位置: 首页> 商友学堂> 商业文库> 电话录音电路图/Telephone recorder

电话录音电路图/Telephone recorder

时间:2015-07-15 10:14:55 来源:中国百科网 点击量:1137

Part

Total Qty.

Description

Substitutions

R1

1

270K 1/4 W Resistor

R2

1

1.5K 1/4 W Resistor

R3

1

68K 1/4 W Resistor

R4

1

33K 1/4 W Resistor

C1

1

0.22uF 150 Volt Capacitor

Q1, Q2

2

2N4954 NPN Transistor

D1

1

1N645 Diode

MISC

1

Wire, Plugs To Match Jacks On Recorder, Board, Phone Plug

Notes

1. The circuit can be placed anywhere on the phone line, even inside a phone.

2. Some countries or states require you to notify anyone you are talking tothat the conversation is being recorded. Most recoders do this with a beep-beep.Also, you may have to get permission from the phone company before you connectanything to their lines.

1 2 3 4 5 6
原材料 工业品 服装服饰 家居百货 小商品 商务服务 更多分类

·王稳庄团餐管理哪一个地方找2025-10-15

·黄冈企业餐饮管理哪家好2025-10-15

·长治果蔬食材配送哪里有,成品食材配送哪家好2025-10-15

·万兴街道公司团餐配送投标方案,中央厨房团餐配送哪家好2025-10-15

·山西铝粉金属包装分几类,钨粉金属包装定制2025-10-15

·宿迁幼儿园食堂承包哪找,小厂食堂承包怎么报价2025-10-15

·台湾马达换向器厂2025-10-15


电话录音电路图/Telephone recorder

Telephone Recorder

This nifty little circuit lets you record your phone conversationsautomatically. The device connects to the phone line, your tape recorder'smicrophone input, and the recorder's remote control jack. It senses the voltagein the phone line and begins recording when the line drops to 5 volts or less.

Schematic


Parts