[time-nuts] ks... answers The emails are getting long

Jim Lux jimlux at earthlink.net
Wed Nov 19 21:00:19 EST 2014

On 11/19/14, 3:59 PM, Dave Daniel wrote:
> I remember the "Fast and Damn Fast Buffer Amp" data sheet. LH0036? I may
> not be remembering the correct part number.  I used to have a copy of
> that data sheet, as well as another that was labeled "DC to Daylight" on
> the data sheet.
> DaveD
> On 11/19/2014 2:42 PM, Mike Feher wrote:
>> Hi Doug -
>> Wow. Wonder how many on here remember or know about National's "Damn
>> Fast" line, HI. I used them all the time, and, still have a few. 73 -
>> Mike

In the 1984 databook (Blue cover with the yellowing fragile newsprint 
pages) and in the 1975 databook (yellow and green cover, nice quality 
paper). LH0033 and LH0063 are the Fast and Damn Fast buffer amplifiers. 
  In this context the data sheet says 6000V/microsecond.  With +/- 10V 
into a 50 ohm load (although you only get 2400 V/us there)

Last two pages in the 84 book are just blank. Last page in the 75 book 
is a description of MIL-STD-883B

Interesting parts.. They aren't kidding when they say you need good 
power supply bypassing and decoupling.(a comment that is in the 84 book 
but not the 75 version) I'm trying to remember what I was using them 
for: driving a YIG tuning coil in a phase locked loop, I think, but it 
might have been driving a fast RF switch.

Interesting parts back then.. Does anyone still make or use a LM746 
"chroma demodulator" (other than as a replacement part) or any of the 
other very purpose specific parts for parts of a TV? (like LM1845 signal 
processing, etc.)

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