Occupation: : 369Date of Birth : 1994-09-29Join Date : 2010-11-12Age : 30
Subject: 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