MrDEB
Well-Known Member
have 18v (2-9v batteries in series)
powering a cmos version of the 556 timer so we are talking low current needs.
to be safe I was planning on 14v at 10ma min. 7556 requires 3-16 volts supply.
the buffered supply is supposed to be better, more stable.
found 2 versions of circuit
one as pictured and one with another resistor from the vcc to the collector. WHY? and which one to use?
will upload rest of entire circuit later
powering a cmos version of the 556 timer so we are talking low current needs.
to be safe I was planning on 14v at 10ma min. 7556 requires 3-16 volts supply.
the buffered supply is supposed to be better, more stable.
found 2 versions of circuit
one as pictured and one with another resistor from the vcc to the collector. WHY? and which one to use?
will upload rest of entire circuit later