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

paul swed paulswedb at gmail.com
Wed Nov 19 21:09:58 EST 2014

I know I have some numbers of chroma demod chips as I recall. Picked up in
a flea market special along with other more useful chips.
I absolutely have the LH033 buffers. Fet input and like lots of power. Have
used them as frequency buffers.
Super easy to use. Real chips

On Wed, Nov 19, 2014 at 9:00 PM, Jim Lux <jimlux at earthlink.net> wrote:

> 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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