Hi Viktor What do you want it to do / measure ? The circuit works by comparing 2 x 2.5 volt signals. Vref from the voltage reference and the voltage divider network. If the non-inverting (+) input is greater than the inverting (-) input the output will be high. If the inverting input (-) is greater ...

Afternoon All, Done a few tests with various capacitors using A PIC16C710 monitoring a DC voltage and turns on or off some transistors to drive a relay (@12V) nothing too spectacular. This current was measured at 3.9mA with a fluke meter. = 0.0195 W. so using an electronic load in constant Power mod...

Hi Jan, For large images have you tried using Paint 3D to resize it ? Unfortunately microsoft removed it from windows 11 but you can still download it from microsoft web site. Autocad inventor outputs where 10000 x 10000 and it handled these with ease. The output can be changed to most image formats...

Hi All Can i add to this ... never buy non brand Lithium from cheap sources. If you have never seen one go kaboom never buy non brand components from cheap sources . At work we see quite a few MOV's and PTC's from "CE" :( go kaboom on customers PCB's for those that have never seen a lion battery exp...

chipfryer27 wrote: ↑

Tue Jun 20, 2023 9:02 pm

You certainly sound like a very resourceful "kid" and that wobble board... genius....

I cannot take all the credit, my dad was a big inspiration

wow that post office relay :) Believe it or not they are still used in the substation industry - big is good :mrgreen: made a few PCB's with tape and acetate sheet in my time also - yes the transfer sheets with the lines curves and pads withe the plastic spatula thing to rub them down. Again from ta...

My Dad got me the kit form ZX81 as i was starting to get interested in electronics, i dont member how many chips it had might have been 6 definitely some 40 pins and some 14 / 16 pins loads of resistors, diode and a handful of capacitors the power supply brick was pre assembled. I do rember getting ...

Hi Iain Cooor that brings back some memories.. never had a TRS80 but had a ZX81(kit form) and a Beeb in later years. I can remember saving up from my paper rounds and milk round and buying a Tandy 4 colour Pen Printer and interfacing it to my Beeb, and my then mates ripping the aboulte, p~%s at the ...

Hi Brendan If you go to MatrixTSL website and look in "learning" https://www.matrixtsl.com/learning/ There are some very useful courses, in there is an "Embedded Internet Communications" Course maybe this will help (about Half way Down) https://www.matrixtsl.com/resources/files/datasheets/CP4895-01%...

HI, The TL431L is a nice little programable reference I posted an example the uses it here (2.5 Volts) , Please see amendment further down the post with the red block around it When i drew that i hadn't had have enough coffee :mrgreen: https://www.flowcode.co.uk/forums/viewtopic.php?f=3&t=1671 There...