I replaced (3) 1.5V AA batteries used in a called I.D. unit with a wall transformer that used to charge up a cell phone.
It puts out 6.17 volts DC at .7amp. The displays shows Set Language but goes no further.
Is it because it is a charger ?
Thanks.
Relace batteries with cell phone charger
Jan 22, 2009
4 Replies
It would be smart to learn basic arithmetic. Start with the product of 3 and 1.5.
More likely the chips have a limit of 5.25V and you zapped them.
I put some NiMh in it and it worked fine.
Good chip design, wider tolerance range. :-)
Andy
The output of the charger is probably pretty noisy.Some filtering might help.
Thanks. Is there a link explaining how I can do that. I have done projects using the circuit boards, diodes, resistors, etc.
Andy
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