From: sleeper75se (sleeper75se_at_yahoo.se)
Date: 2002-03-30 19:40:02
--- In buildcheapeeg_at_yahoogroups.com, "Joerg Hansmann" <info_at_jhansmann.de> wrote:
> Hi,
>
> ----- Original Message -----
> From: sleeper75se <sleeper75se_at_yahoo.se>
> To: <buildcheapeeg_at_yahoogroups.com>
> Sent: Friday, March 29, 2002 6:00 PM
> Subject: [buildcheapeeg] New opto coupler/fiber receiver
> ...
>
> > Joerg: I failed to import the MAX987 into SwitcherCAD, but if you
> > want to take a closer look at this circuit, I guess you know how!
>
> It was a bit of patching required. But here it is (in the
attachment)
Thanks!
I've made and uploaded a SwitcherCAD schematic and screen dump. The
specs differ a bit from my previous simulation. Apparently the laws
of "physics" differ a bit between SPICE simulators.
http://groups.yahoo.com/group/buildcheapeeg/files/hardware%
20design/RS232TX/
Current: +3.5mA/-2.5mA at 3kOhm/1000pF load.
Propagation delay: (rise/fall) 1.25us/1.75us at this load.
I think this one looks promising. Comments?
Regards,
Andreas
This archive was generated by hypermail 2.1.4 : 2002-07-27 12:28:43 BST