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 Telephone Hold Button

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amr mohamed
 
 
amr mohamed


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Date of Birth : 1994-09-29
Join Date : 2010-11-12
Age : 30

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PostSubject: Telephone Hold Button   Telephone Hold Button I_icon_minitimeSun 03 Apr 2011, 9:11 am

Telephone Hold Button

Description of Service

Speaker phone bell .. Or add
Indicator light when ringing


Circuit diagram

Telephone Hold Button Teleph11

Electronic items

Resistance of 10 kilo ohms
Resistance
47 Kilo Ohm 2
Resistance
10 Ohm
Capacitor 0.22
Mkrofrad number 3
Capacitor
20 Mkrofrad
Transistor 2N3904 2 1N4148 diode 2
Bell or
12-volt lamp

cheers

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