Thread: LM78XX schematic from 1978 National Semi Linear Data Book
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legg legg is offline
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Default LM78XX schematic from 1978 National Semi Linear Data Book - Linear Voltage Regulators Roy Ferranti APN27.pdf (0/1)
On Tue, 05 Aug 2008 09:54:22 -0400, John Popelish
wrote:

legg wrote:

http://www.national.com/rap/Applicat...570,24,00.html

Which of the example structures in this reference do you
think is most closely related to the one I showed for the
LM78XX? None look similar to my not so educated eye.

I found an example of Band-Gap regulator reference bootstrapping in an
old design note from ~'83. This is Ferranti APN-27 by Bill Roy. Figure
3-7 shows a regular bandgap arrangement, while fogure 3-8 shows
bootstrapping similar to the 780x series.

RL
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