Hi list,
I'm running into some small problems with my ASR. It is working as it
should, apart from two things:
First, the LF356 are running warm, which usually only troubles me if the
circuit doesn't work either. Should they get warm if it works fine?
Second, the outputs step up and down by around 10mV in sync with pin 12 of the 4024.
With no input, it steps between 90mV and 100mV.
This stops if I pull out the clock, so it's not coming in through the
power rails. This pcb trace is pretty small and I can't see anything
wrong along it. Anyone ever seen this before? How can this signal
get into the outputs?
When the clock is off, the outputs are rock solid. No drooping whatsover,
it can hold the input seemingly forever. I got some big bright yellow
polypropylene capacitors off eBay that work great. It turned out to
be quite hard to get decent sized 47nF polypropylene over here...
Louis
I'm running into some small problems with my ASR. It is working as it
should, apart from two things:
First, the LF356 are running warm, which usually only troubles me if the
circuit doesn't work either. Should they get warm if it works fine?
Second, the outputs step up and down by around 10mV in sync with pin 12 of the 4024.
With no input, it steps between 90mV and 100mV.
This stops if I pull out the clock, so it's not coming in through the
power rails. This pcb trace is pretty small and I can't see anything
wrong along it. Anyone ever seen this before? How can this signal
get into the outputs?
When the clock is off, the outputs are rock solid. No drooping whatsover,
it can hold the input seemingly forever. I got some big bright yellow
polypropylene capacitors off eBay that work great. It turned out to
be quite hard to get decent sized 47nF polypropylene over here...
Louis