Search found 7 matches

by visionics
Sun Sep 22, 2024 4:50 pm
Forum: For Sale / Wanted
Topic: wanted MM5314
Replies: 7
Views: 624

Re: wanted MM5314

two circuits CMOS 4000 expand easy the MM5316 with next two digits 10'seconds and seconds. You get six non-multiplexed display.
by visionics
Mon Sep 16, 2024 9:31 am
Forum: Offer / Request services
Topic: offer prited circuit design
Replies: 3
Views: 942

Re: offer prited circuit design

I need from you: - schematics (on paper or in PDF) - list of components; values are not important but I need know cases (thd, smd) - requested pcb size and form - location of holes, switches, etc. you get - re-drawed schematics - components topology on pcb - Gerber files - Excellon files on request ...
by visionics
Sun Apr 14, 2024 6:15 pm
Forum: Digital circuit w/o MCU
Topic: how to copy EPROM
Replies: 5
Views: 4922

Re: how to copy EPROM

If you only need a copy of the EPROM, this option does not matter. Read the contents of your EPROM and program a new EPROM with the file and the same option.
by visionics
Sat Apr 13, 2024 7:28 am
Forum: Offer / Request services
Topic: offer prited circuit design
Replies: 3
Views: 942

offer prited circuit design

Offer bespoke printed circuit design, THD and SMD for digital and analog systems. Possible PCB production.
by visionics
Fri Mar 08, 2024 6:06 pm
Forum: Intel
Topic: Intel 80C188 with coprocessor
Replies: 2
Views: 1246

Re: Intel 80C188 with coprocessor

The connection between 80C188/80186 and 8087 is possible via a special interface circuit 82188. I've never seen the 82188. I only know him from a small photo. Many years ago I had a message that this chip actually existed, but was only available to military customers. There is an application note (A...
by visionics
Mon Mar 04, 2024 10:47 am
Forum: EdwinXP
Topic: how to make new component
Replies: 1
Views: 705

Re: how to make new component

that's easy. I cannot describe here in detail how a new component is made step by step. Please note that each component has - schematic symbol - Package symbol The schematic symbol is just a visual image for drawing a schematic. In the schematic symbol, the correct number of connections (pins) is im...
by visionics
Sun Sep 17, 2023 8:20 am
Forum: Digital circuit w/o MCU
Topic: I need a frequency standard
Replies: 4
Views: 4295

Re: I need a frequency standard

I suggest you to use Jupiter GPS receiver which has 10kHz signal rather than 1pps. The 10kHz signal can be used for PLL to tune 10MHz local oscillator.