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N_Cook <diverse@tcp.co.uk>: Mar 10 04:06PM RIFAR540 RD6416 N Could be 1 instead of I , and N probably refers to the plastic encapsulation. 14 pin IC in the power supply section of some 1979 kit.

N_Cook <diverse@tcp.co.uk>: Mar 10 06:31PM On 10/03/2019 16:06, N_Cook wrote: > RD6416 N > Could be 1 instead of I , and N probably refers to the plastic > encapsulation. 14 pin IC in the power supply section of some 1979 kit.   Until I can power-up probe/explore trackside, my guess is perhaps , from the "16", a variant of CMOS quad analogue sw.

N_Cook <diverse@tcp.co.uk>: Mar 10 09:13PM On 10/03/2019 18:31, N_Cook wrote: >> encapsulation. 14 pin IC in the power supply section of some 1979 kit.   > Until I can power-up probe/explore trackside, my guess is perhaps , from > the "16", a variant of CMOS quad analogue sw.   pins 1,3,5 and 13 seem of the same type or function, inputs or outputs or control lines from another board, so could be quad an. sw. A stepped range of supply volts or amps would make some sense for a step-wise variable drive.

John Robertson <spam@flippers.com>: Mar 10 10:44PM -0700 On 2019/03/10 2:13 p.m., N_Cook wrote: > or control lines from another board, so could be quad an. sw. > A stepped range of supply volts or amps would make some sense for a > step-wise variable drive.   UA/LM741 was a common regulator back then and came in a 14 pin DIP, but it doesn't match your description of particular pins. Where is your device relative to the pass transistor? Does it drive the base or the [ass transistor or does it drive another transistor that perhaps drives the base?   What equipment is it used in? You say some kit, more info may help if one of us has the schematics...   John :-#)#   -- (Please post followups or tech inquiries to the USENET newsgroup) John's Jukes Ltd. MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3 (604)872-5757 (Pinballs, Jukes, Video Games) www.flippers.com "Old pinballers never die, they just flip out."

Phil Allison <pallison49@gmail.com>: Mar 10 11:49PM -0700 John Robertson wrote:   > UA/LM741 was a common regulator back then and came in a 14 pin DIP,     ** Huh ??   Surely you mean the uA/LM723 adjustable regulator.   The LM741 is a most famous op-amp.         ... Phil

N_Cook <diverse@tcp.co.uk>: Mar 11 09:04AM On 11/03/2019 05:44, John Robertson wrote:   > What equipment is it used in? You say some kit, more info may help if > one of us has the schematics...   > John :-#)#   The 14A of these EDM   <http://www.aga-museum.nl/page/geodimeter-model-12->   The external V reg for 12V car battery down to 6V failed decades ago , repairing that, there was still a fault inside. Powering up these days all the amber nixie segments light on test, signal LEDs light , servo neutral density filter rotates, a shutter moves but no cue tone on the audio and simple IR phototransistor+red LED zapper tester shows no IR output. Getting inside and isolating (perhaps, not wanting to disturb the fixing of the sub-board in its screened box as all optically aligned) the Tx GaAs diode cold tests as likely functional. Next thing (as 4 densely packed boards of TTL and CMOS and rather too many "after-thought"/mod flying components including a 14 pin IC) is fit back together , expanded with standoffs, to be able to probe the PS area. But stepped supply to the Tx diode makes operational sense. The only tech material i've found is this general principles of operation of such EDM of that time. It has some provenance, owned by Ordnance Survey the premier map-makers in the UK, until something went wrong with it and they entered it into one of their then regular auctions of surplus stuff.

N_Cook <diverse@tcp.co.uk>: Mar 11 09:09AM On 11/03/2019 09:04, N_Cook wrote: > The only tech material i've found is this general principles of > operation of such EDM of that time.   omission   <http://www.sage.unsw.edu.au/sites/sage/files/SAGE_collection/MonographSeries/mono7.pdf>

N_Cook <diverse@tcp.co.uk>: Mar 11 01:12PM Harris semiconductor had a series run in 70s of RD*** and did loads of an sw variants in 80s/90s, perhaps RD6416. There is certainly 4 "channels" associated with it , a resistor different values , BC107 pre-driver and a TO220 driver/pass transistor repeated 4 times.

John Robertson <spam@flippers.com>: Mar 11 09:31AM -0700 On 2019/03/10 11:49 p.m., Phil Allison wrote:   > .... Phil   Thanks Phil, of course I meant the 723. That is why you should never post after an evening of wine...   John :-#(#

Tom Biasi <tombiasi@optonline.net>: Mar 08 01:01PM -0500 > On Friday, March 8, 2019 at 10:42:22 AM UTC-5, Tom Biasi wrote:   >> For the person or the watch?   > Does it matter?   I would hate to see someone suffer the hole time.

Andy Burns <usenet@andyburns.uk>: Mar 10 05:29PM > I have also tried multiple NICs in PCs with almost zero success.   I have used multiple (probably eight at most) NICs in multiple PCs with complete success.

jurb6006@gmail.com: Mar 10 07:02PM -0700 >"I have used multiple (probably eight at most) NICs in multiple PCs with complete success. "   How ? And what OS ?

Andy Burns <usenet@andyburns.uk>: Mar 11 09:00AM > Andy Burns wrote: > >> "I have used multiple (probably eight at most) NICs in multiple PCs with complete success."   > How ?   four onboard gigE, one dual gigE PCI card, one dual 10gigE PCI card.   > And what OS ?   Windows and VMware (separately)

rsteel200@gmail.com: Mar 11 01:37AM -0700 Hey Guys,   My Sony VCR SLV-EZ717 has an error code 3100D and idk what it means or something like that. :\   Regards Robert Steel

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