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amr mohamed
 
 


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Occupation: : 369
Date of Birth : 1994-09-29
Join Date : 2010-11-12
Age : 22

PostSubject: Telephone ring amplifier   Sun 03 Apr 2011, 8:53 am


Telephone ring amplifier


Description of Service

Speaker phone ringing bell


Circuit diagram



Electronic items

Resistance of 33 kilo ohms 2
Resistance
47 Kilo Ohm 2
Resistance
220 Ohm
Resistance
10 Ohm
A resistance
Om 0.22 MB
Mkrofrad the 3 intense
Capacitor
2200 Mkrofrad
Transistor 2N3904
Diode
1N4148 number 4
bell

cheers

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