cdog
Newbie level 5
Okay, so if you've recognised the initials, you're probably an old timer like me, one who bemoans the irresistable march of the PIC brigade!
We mainly belong to an age where we made our circuits from scratch, (and took great joy from a successful gizmo..but rarely enough joy to actually box it up and USE the thing), and to press 'salvaged' parts into a use for which they were not designed was a thrill in itself.
I'm coming to the point now, so put down the Phyllosan, and tune in and turn on. (I always thought that the hippies had that wrong. Supposedly you would have to 'turn on' before you could 'tune in'. After a suitable interval whist the tubes heated up first, of course!) But I digress. I have about me two identical front panels with 4 digit 7 segment LED displays. These are driven from a MC14499P chip. I want to make them become a 30volt voltmeter, and a 3 amp ammeter respectively.
Any circuit ideas chaps. cdog.
We mainly belong to an age where we made our circuits from scratch, (and took great joy from a successful gizmo..but rarely enough joy to actually box it up and USE the thing), and to press 'salvaged' parts into a use for which they were not designed was a thrill in itself.
I'm coming to the point now, so put down the Phyllosan, and tune in and turn on. (I always thought that the hippies had that wrong. Supposedly you would have to 'turn on' before you could 'tune in'. After a suitable interval whist the tubes heated up first, of course!) But I digress. I have about me two identical front panels with 4 digit 7 segment LED displays. These are driven from a MC14499P chip. I want to make them become a 30volt voltmeter, and a 3 amp ammeter respectively.
Any circuit ideas chaps. cdog.