Re: [time-nuts] Homebrew Rubidium oscillator, jitter and other tales :-)

2010-08-07 Thread Magnus Danielson
On 08/07/2010 07:31 PM, Richard (Rick) Karlquist wrote: ulm...@vaxman.de wrote: blinked. This problem was eventually solved by driving the LED with a discrete transistor instead of a free 74AC14 gate and decoupling this driver with an RC-combination. CMOS logic gates have a totem pole output

Re: [time-nuts] Homebrew Rubidium oscillator, jitter and other tales :-)

2010-08-07 Thread Richard (Rick) Karlquist
ulm...@vaxman.de wrote: blinked. This problem was eventually solved by driving the LED with a discrete transistor instead of a free 74AC14 gate and decoupling this driver with an RC-combination. CMOS logic gates have a totem pole output that is famous for "overlap" where both transistors on b