Friday, June 29, 2007

Hearing Aid


This low-cost, general-purpose electronic hearing aid works off 3V DC.
In this circuit, transistor and associated components from the audio signal preamplifier for the acoustic signals picked up by the condenser microphone and converted into corresponding electrical signal. The audio output of this circuit is 10 to 15mW and the quiescent current drain is below 1mA.


3 comments:

shiva said...

Hi guys this is shiva from Hyderabad
first I would like to congratulate u for ur effort
Iam willing to buy this item, infact in largescale
At present iam using tubelight set that is made in china and
it's a 36 watt tube light, how can I reuse this tubelight
if possible please find a solution
my mobile no is 9949125050

shiva said...

Hi guys this is shiva from Hyderabad
first I would like to congratulate u for ur effort
Iam willing to buy this item, infact in largescale
At present iam using tubelight set that is made in china and
it's a 36 watt tube light, how can I reuse this tubelight
if possible please find a solution
my mobile no is 9949125050

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