Electronics Design

National SC/MP micro

A bunch of stuff about our late regular, Don Lancaster too https://hackaday.com/2025/08/16/the-nibbler-was-quite-a-scam...

32 comments posted 11mos

posted by pcdhSpamMeSenseless

32 comments posted 11mos posted by pcdhSpamMeSenseless

Question re circuit with controlled output resistance

Hi. In Roberge's Op Amp book (2007 2nd ed) there is this practice problem: > Assume that the operational-amplifier conn...

1 comments posted 11mos

posted by christopher

1 comments posted 11mos posted by christopher

Re: The size of their toys

> > > But where the hell would I *put* it??? > > [Did someone say "downsizing"?] Any local sheet metal or fabrication s...

1 comments posted 11mos

posted by carl.ijamesXX

1 comments posted 11mos posted by carl.ijamesXX

Re: Routing coax through exterior (block) walls

On Thu, 14 Aug 2025 12:51:08 -0700, Don Y snipped-for-privacy@foo.>I've got a length of RG213u that wants to exit the h...

1 comments posted 11mos

posted by joegwinn

1 comments posted 11mos posted by joegwinn

Re: SDR references

Am 30.07.25 um 21:04 schrieb Don Y: > Aside from the "usual places", any pointers to particularly good texts > on SDR d...

0 comments posted 11mos

posted by dk4xp

0 comments posted 11mos posted by dk4xp

polyphase boost converter

I've done polyphase bucks, but not boost. Might be useful.

5 comments posted 11mos

posted by jl

5 comments posted 11mos posted by jl

Rigol scope

https://www.amazon.com/gp/aw/d/B0CGHTLRHS/ That's crazy. 4 channels at 12 bits and 250 MHz, built-in sig gen and logic...

20 comments posted 1yr

posted by jl

20 comments posted 1yr posted by jl

Integrator transfer function and arbitrary continuous input signals

Hi, I'm trying to work slowly through the great Op Amp book by Roberge et al that was recommended earlier. I downloaded...

7 comments posted 1yr

posted by christopher

7 comments posted 1yr posted by christopher

PCB mfrs & the tariffs

Who is your go-to PCB manufacturing house? We need to settle on a domestic house because of the tariffs. (I guess that m...

26 comments posted 1yr

posted by Sophi.2

26 comments posted 1yr posted by Sophi.2

Re: CTA5e termination alternatives

> I don't have the "volume budget" to accommodate RJ45/8P8C's. > what do you mean? that you don't have room for an RJ45?

1 comments posted 1yr

posted by llc

1 comments posted 1yr posted by llc

Re: ANY(ONE can code

> > > And you wonder why your job is going away?  Hopefully, the end of > "Programmer" -- as a job description -- is ju...

36 comments posted 1yr

posted by bill.sloman

36 comments posted 1yr posted by bill.sloman

AI for FPGA design

It seems to be happening, according to AI. It would be cool to design FPGAs at a higher level than VHDL or Verilog....

11 comments posted 1yr

posted by jl

11 comments posted 1yr posted by jl

true/complement logic gate

I think there was once a true/complement TTL gate, with one input and complementary, time-matched outputs. I guess you c...

2 comments posted 1yr

posted by jl

2 comments posted 1yr posted by jl

GaN power IC EPC23104

https://www.digikey.com/en/products/detail/epc/EPC23104ENGRT/16784419?s=N4IgTCBcDaIKYAcDGYDMBGADAFhAXQF8g What's weird...

0 comments posted 1yr

posted by jl

0 comments posted 1yr posted by jl

Re: HVAC control interfaces

On Fri, 8 Aug 2025 06:25:11 -0700, Don Y snipped-for-privacy@foo.invalid wrote: >Legacy HVAC controls (what the industr...

1 comments posted 1yr

posted by joegwinn

1 comments posted 1yr posted by joegwinn