I am a chemical engineer and when I retired I was working on the safe
landfall of north sea oil and gas. I have little formal electronics
training and I'm mostly self taught.... That said....
I do a mixed bag of experiments using dead insect on a copper sided
PCB, a plug in board, a literal breadboard (mostly for valves), strip
board when I want something semi-permanent or for a long running
experiment and simulations using LTSpice. I tend to do what I think is
best at the time for the tests I want to perform. I do enjoy building
things, this is the hobby after all.
My use of LTSpice is limited to analogue stuff and some power supply
simulations. I've not had too much success with designs that use
inductors in particular. But I spent some time simulating various CRT
deflection amplifier designs before moving to a PCB and I was not
disappointed by the results. I know I should simulate more before
heating up the soldering iron...
For PCB design I own an unlimited copy of Eagle 7.7.0 which was the last
version before they went subscription based. It is getting old now (like
me) and I have looked at some of the all-in-one design software but
Eagle does what I want (schematic to Gerbers), I know how to use it and
I have a large component library that I have developed myself. So I
don't feel a need to go anywhere else: I am unconvinced that the
facilities in any new software would be repaid the time I would spend
learning how to use it. But my prototype PCB designs often have
problems: they tend not to be "electrical" but "mechanical" in nature.
Components are too close or I goof with the silkscreen such as I label
things incorrectly - this is just incompetence I know.
Going back to the simulation question - I started with QUCS and then
moved to LTSpice - should I look to use another simulator? What should I
look at beyond LTSpice?
Keep in mind my limited knowledge of electronics and the need to
self-teach!
Grahame
On 30/03/2024 12:03, Dekatron42 wrote:
I sometimes use LTSpuce for analogie simulations where many different
positive and negative voltages are present as my skills ate inferior
when it comes to electronics, I especially did this when figuring out
how to design coupling stages and driving stages for the A-201
Polyatron some years back.
/Martin
On Tuesday 26 March 2024 at 21:20:07 UTC+1 gregebert wrote:
I've heard of Proteus and Falstad, but never looked into them
because I'm entrenched in my current suite of free CAD tools and
so far I havn't seen anything that will nudge me out. The biggest
fear I have is that a tool will get abandoned, so having them
installed on my local system is a must. So far, the gEDA tools
haven't been abandoned yet, but it's been a few months since the
latest update.
On Tuesday, March 26, 2024 at 12:45:02 AM UTC-7 Tom Nolan wrote:
I've been using Proteus for many years. I'm sure I've saved
lots of money on wasted boards. Also often see better ways of
doing things while simulating.
Tom
On Sat, Mar 23, 2024 at 11:41 AM gregebert
<greg...@hotmail.com> wrote:
Just curious to know how many of you run logic and/or
analog simulations on your designs before doing a PCB, or
if you do any prototyping.
Since I'm a longtime designer of IC's, I rely heavily on
simulations: ngspice for the analog sections, verilog for
the entire PCB (logic, FPGA if any, and analog). Once that
is done, I go straight to PCBs with no prototyping. So
far, I've only had 1 project that required any 'blue
wires' to fix a design error.
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