Tim Williams
Guest
Tue Jan 31, 2012 2:05 am
On Jan 28, 3:51 pm, Jasen Betts <ja...@xnet.co.nz> wrote:
Quote:
CD4047 has complementary output. VDD upto +15V
Beautiful! And TI makes a TSSOP, which won't take up much space at
all. Thanks!
http://search.digikey.com/us/en/products/CD4047BPWR/296-13642-1-ND/509666
Tim
josephkk
Guest
Tue Jan 31, 2012 5:07 am
On Thu, 26 Jan 2012 08:38:24 -0800 (PST), Tim Williams
<tmoranwms_at_gmail.com> wrote:
Quote:
On Jan 26, 7:03 am, Bill Sloman <bill.slo...@ieee.org> wrote:
What James Arthur presumably had in mind was good old 4000 series
CMOS. MC14xxxB runs from 3V to 18V.
http://www.onsemi.com/pub_link/Collateral/MC14013B-D.PDF
You could use a couple of inverters (or 2n7002s) to make a non-50%
duty cycle oscillator and divide it with the 14013 to get exactly 50%.
This is exactly what I proposed, and dismissed, in my OP, since it
wastes more than half the pins of two SO14 chips. There must be a
better way. Like I said, an HV TimerBlox or TinyLogic would be good.
Tim
Make a FF out of two 2n7002s that runs at 12 v. Now you only need an
oscillator. One more 2n7002 for a blocking oscillator?
?-)
