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Hello,
I'm using a classic 2x transistor Schmitt Trigger design powered by +/12V rails.
If there was any minor changes in the output voltage of the plus or minus rails - e.g. between different OEM power supplies, or if the rails were operating at e.g +11.75 and -11.50 rather than exactly...
Wider traces == less resistance == less heat (in very basic terms).
Yes - that was the intention of my original post.
Thanks for the clarification though.
/ J
Thanks for the replies - I don't think I've explained this clearly (or maybe I'm imagining the problem...) - I'll try again.
1) This represents the physical layout. A buffer output on PCB1 connected to an inverting op-amp input on PCB2 via an inter-board connector (the blue trace)
2) Is what...
So - if there's a wider/thicker, less resistive trace for current to flow through - it will take that, which would potentially mean less current travelling through the thinner, more resistive trace - which would mean less heat on that trace.
Assuming I've understood that - it makes sense. It's...
Apologies if I'm way off the mark here - trying to understand some PCB heat issues...
1) I understand that if a given trace width is too thin (A) to dissipate the amount of current/heat it needs to carry - it will get hot.
2) If the trace took two paths - one (B) with a width that would...
I have a PCB design that uses 2x different boards with an inter-board connector between them. I've realised that I might have done something stupid with the trace/layout that one of the connectors is using - hopefully the pic should explain it...
v1) PCB 1 has an op-amp buffer, the output...
I'm working on a design that uses 6x of the classic Jung Voltage Clippers to block DC voltage greater than +2.5V.
They each require a +2.5V VRef where I have a choice of A) setting up a single LM-336 SOIC buffered by an SOIC Op-Amp and running all 6x VRefs off of that (or perhaps off...
Sure - here's where I'm at:
The TL072 is my current workhorse and I use the OPA2134 in critical audio applications when I need to. I'd like to find a 3rd choice for critical/precision DC circuits e.g. exponential converters - but that will also be happy handling audio if needed.
Right now -...
No wonder it didn't work! :wink: Yes - my bad - I did mean TL072 :roll:
I'd like to see if I can improve the 'precision' of the current source - so I guess that's down to input offset and Common mode rejection?
I should point out that the circuit is working as expected - so I'm not trying to...
Re: Op-Amp 'upgrades' - TL072 vs MC33078 vs OPA22x
That's exactly what I did and I don't feel like there was an obvious answer (that I could see). For example - the OPA2227 seems to be very highly regarded but it has a lower slew rate and a higher quiescent current than the TL072 - and it's...
I'm looking for a dual op-amp in a SOIC package to test as an 'upgrade' to the TL074. I'm using these in an exponential current source which is working adequately using the TL074 - I was just curious about what possible performance boost might be available with a better specced op-amp.
I looked...
The first image is taken from the data sheet for a TI 8x DAC evaluation board. it shows C11 at the REF5025 output with a 1R5 Resistor to GND.
When I checked the data sheet for the REF5025 it doesn't show this R to GND (second image) - it quotes "A 1-μF to 50-μF, low-ESR output capacitor (CL)...
https://uk.farnell.com/bourns/pwr221t-30-8r00f/resistor-thick-film-8ohm-1-to/dp/2328292?ost=232-8292
I was looking for an 8R resistor to act as a cheap, quick and simple dummy load/speaker replacement in a small amp circuit I'm working on.
I came across the one in the link above on the Farnell...
Kind of a general question (if there is a general answer)…
What are some of the main problems associated with long, thin traces on a PCB design?
I'm asking because I recently had to troubleshoot a circuit where the problem seems to be down to 3x traces at approx. 6cm long and 5 mil thick -...
Partly answered my own question after some more data sheet digging. Seems like both amps can source/sink between approx. 20 and 25mA.
Still not sure of the equivalent value of the VRefs though.
Thanks.
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