Red Bar Room
Jun 01, 1996, 01:00 AM
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<title>Make a Constant Current Nicad Charger</title>
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<pre><img src="http://static.rcgroups.com/articles/ezonemag/1996/../images/ccurrent.gif" width="679" height="236"></pre>
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<pre>The schematic for this charger is pretty simple. You can charge
from 1 to 20 +/- nicads at a constant current of from 20 to 200 ma
+/-. The circuit I modified from an article in July 1977 "73
Amateur Radio Magazine". The transformer can be anything from 24
volts (lower volts=fewer cells charged) up to 30 or so volts. The
more volts the more cells you can charge. All diodes are 1n4001 or
similar. The cap can be most anything around 500mf or greater.
The meter can be any ammeter if you wind your own shunt. I've
built and used 2 or them for years.
Good luck
Pete Christensen
WB7TMI/5
al653(at)rgfn.epcc.edu
</pre>
</div>
</body>
</html>
<head>
<title>Make a Constant Current Nicad Charger</title>
</head>
<body bgcolor="#FFFFFF">
<div align="center"><center>
<pre><img src="http://static.rcgroups.com/articles/ezonemag/1996/../images/ccurrent.gif" width="679" height="236"></pre>
</center></div><div align="left">
<pre>The schematic for this charger is pretty simple. You can charge
from 1 to 20 +/- nicads at a constant current of from 20 to 200 ma
+/-. The circuit I modified from an article in July 1977 "73
Amateur Radio Magazine". The transformer can be anything from 24
volts (lower volts=fewer cells charged) up to 30 or so volts. The
more volts the more cells you can charge. All diodes are 1n4001 or
similar. The cap can be most anything around 500mf or greater.
The meter can be any ammeter if you wind your own shunt. I've
built and used 2 or them for years.
Good luck
Pete Christensen
WB7TMI/5
al653(at)rgfn.epcc.edu
</pre>
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</body>
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