Re: 2N3055 failure (power supply)
- From: cbarn24050@xxxxxxx
- Date: 28 Dec 2006 07:00:13 -0800
Phil Allison wrote:
<cbarn24050@xxxxxxx
I cant read this circuit very well, it appears to be an emmiter
follower. If thats the case then you have 2 basic problems. Firstly
your output is not inside the regulation loop so your regulation will
be poor. Secondly you have no short circuit protection, or indeed any
current control.
** Nonsense.
The OP supplied a partial schem and STATED that it was a current limited
supply.
Well i guess Phil, one of us cant read.
Both these problems are easily solved by looking at
the application notes for the 723.
** The OP very likely has a schem like figure 4 here:
http://www.national.com/ds/LM/LM723.pdf
Maybe but since he didnt state it its just speculation on your part.
Rsc is probably one of the 0.1 ohm ballast resistors shown in his schem,
resulting in a 6.5 amp limit per 3055 device.
That would be too bad if it was since the 2n3055 wont survive a short
at that current for long.
....... Phil
.
- Follow-Ups:
- Re: 2N3055 failure (power supply)
- From: Phil Allison
- Re: 2N3055 failure (power supply)
- References:
- 2N3055 failure (power supply)
- From: Ben Jackson
- Re: 2N3055 failure (power supply)
- From: cbarn24050
- Re: 2N3055 failure (power supply)
- From: Phil Allison
- 2N3055 failure (power supply)
- Prev by Date: Re: Home made heat sink pads
- Next by Date: Re: hi
- Previous by thread: Re: 2N3055 failure (power supply)
- Next by thread: Re: 2N3055 failure (power supply)
- Index(es):
Relevant Pages
|