Alt-BEAM Archive
Message #05005
To: beam@sgiblab.sgi.com
From: Bob Shannon bshannon@tiac.net
Date: Fri, 02 Jul 1999 16:53:24 -0400
Subject: [alt-beam] Re: inverter trouble
If its an HCT, you really need to keep the voltage near 5 volts, then they work
great. If your application is battery powered, HCT's are great, they are often
easier to find than the HC's are. (Radio Shack has HCT240's in stock off the
shelf)
If you have a solar application, disable the HCT 240's while the voltage is low
and enable the inverters only when you have power to use them.
Just gotta have them run at low voltage? The you really need the HC parts.
JVernonM@aol.com wrote:
> Hello all,
> I have been having trouble with inverter failure on my HCT240E chips. They
> seem to work fine until power falls to a certain level, then the inverters
> seem to lock up. This problem has cropped up on two freeformed circuits so
> far. I have many others, sitting there blinking away until the LEDs are to
> dim to see. But these two fail very quickly, settling down to one side or the
> other of the Bicore and remaining there until the cap is drained. The ones
> that work are built exactly like the ones that don't. Anyone know what is
> going on. Did I fry the chip? To much flux? Is it Tilden's revenge for one to
> many negative opinions? Anyone had this problem? Very frustrating.
> Jim
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