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| Ev Archive for January 1998 |
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| 1241 messages, last added Wed Aug 08 18:41:28 2001 |
[Date Index][Thread Index]
Re: Caution on Modular Chargers, Battery Regulators
- To: Multiple recipients of list EV <EV@SJSUVM1.SJSU.EDU>
- Subject: Re: Caution on Modular Chargers, Battery Regulators
- From: Otmar Ebenhoech <Otmar@EVCL.COM>
- Date: Fri, 30 Jan 1998 18:45:39 -0800
- In-Reply-To: <199801310442.UAA08071@firewall.evcl.com>
- Reply-To: Electric Vehicle Discussion List <EV@SJSUVM1.SJSU.EDU>
- Sender: Electric Vehicle Discussion List <EV@SJSUVM1.SJSU.EDU>
>You're right, Dale, the current in the shunt/battery monitor is less less
>than 200mA. The PIV of over 400 volts is still a problem.
400 Volts is only a problem if you are buying diodes from radio shack. In
the electronics world, a 600V diode costs only pennies more than a 50V one.
For instance, a 1N4001 is a 1A 50V diode. costs 5 cents in 100s.
A a 1N4006 is a 1A 800V diode. costs 6 cents in 100s.
These prices from Anchor Electronics in Santa Clara.
So, I think Dale's is a easy solution.
Now the problem arises of what happens if a battery open circuits during
charging. At that point you could see a forward voltage equal to 25% of
your pack voltage on the unit. (full charger output - nominal pack
voltage) That may be safeguarded with a fuse, or with a themistor as is
done in the Battpros.
-Otmar-
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Electric Vehicle Components Ltd.
Otmar Ebenhoech Otmar@EVCL.com (650) 494-9255
Energizer Bunny arrested, charged with battery.
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Re: Caution on Modular Chargers, Battery Regulators R
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