Help regarding my doorbell diagram.

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#1 21672001 22 Jul 2014 17:46

FRANCIS PAULO CABANLET FRANCIS PAULO CABANLET

Anonymous

Post #1
21672001 22 Jul 2014 17:46

Are the resistors values right?

is there a more suitable component other than UM66?

Thanks
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#2 21672002 22 Jul 2014 18:50

Emmanuel Galleto Emmanuel Galleto

Anonymous

Post #2
21672002 22 Jul 2014 18:50

Hi Francis,

I have here a link of a Doorbell Circuit which discuss about UM66 replacement.

Hope it helps
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#3 21672003 24 Jul 2014 22:47

Safwan RAJAB Safwan RAJAB

Anonymous

Post #3
21672003 24 Jul 2014 22:47

Hello!
If the supply is 3V the upper resistor must me about 0 ohm or 1 ohm as protection while speaker 8 ohm/0.5W
the second resistor must be about 1Kohm

B.R
#4 21672004 25 Jul 2014 11:52

FRANCIS PAULO CABANLET FRANCIS PAULO CABANLET

Anonymous

Post #4
21672004 25 Jul 2014 11:52

ow, i forgot about that. thanks
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