Hi there
I would like to replace 555 timer clock with amp output of tape player to step through a 4017 chip. Here is my thinking right now, let me know if this is in the right direction:
headphone out from tapedeck : 12vdc amplifier 7 watts (amperage would be 1.7A i belive)
12vdc amplifier split to loudspeaker and 7805 regulator (with series resistor to drop current...not sure how this will be shared between loudspeaker and 7805 tho)
output of 7805 to logic input......
Hmmm this is my thinking so far. I'm not really sure of the switching speed of the 7805 and it probably isn't meant for this application. Maybe using an opamp as a switch?
Thanks,
M
I would like to replace 555 timer clock with amp output of tape player to step through a 4017 chip. Here is my thinking right now, let me know if this is in the right direction:
headphone out from tapedeck : 12vdc amplifier 7 watts (amperage would be 1.7A i belive)
12vdc amplifier split to loudspeaker and 7805 regulator (with series resistor to drop current...not sure how this will be shared between loudspeaker and 7805 tho)
output of 7805 to logic input......
Hmmm this is my thinking so far. I'm not really sure of the switching speed of the 7805 and it probably isn't meant for this application. Maybe using an opamp as a switch?
Thanks,
M