Electronics > Projects, Designs, and Technical Stuff

Solderless vs. soldering - what a difference (measuring 3V LDO)

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vk6zgo:

--- Quote from: tggzzz on May 24, 2024, 10:31:36 am ---I suppose I might see a black swan, someday.

--- End quote ---

Come to Australia, they're all over the place!

Staying with Oz, in support of the "unimpressed with solderless breadboards" argument.
Throughout my career in electronics, I never saw such a breadboard "used in anger".
A few places had one tucked away unused for years, some still in their original unopened packing.
The general opinion amongst both Techs & EEs was that they were overpriced & unreliable.

The EEs usually built prototypes in "spiderweb" fashion, got a nice PCB made & handed it to a Tech to build----and debug, as things seldom worked as well on a PCB as they did "spiderwebbed".

tggzzz:

--- Quote from: vk6zgo on May 25, 2024, 06:50:40 am ---
--- Quote from: tggzzz on May 24, 2024, 10:31:36 am ---I suppose I might see a black swan, someday.

--- End quote ---

Come to Australia, they're all over the place!

--- End quote ---

I ought to come. Between school and uni my daughter came home and announced "Dad, I've bought a plane ticket for 6 months in Australia". Did her the world of good :)



--- Quote ---Staying with Oz, in support of the "unimpressed with solderless breadboards" argument.
Throughout my career in electronics, I never saw such a breadboard "used in anger".
A few places had one tucked away unused for years, some still in their original unopened packing.
The general opinion amongst both Techs & EEs was that they were overpriced & unreliable.

The EEs usually built prototypes in "spiderweb" fashion, got a nice PCB made & handed it to a Tech to build----and debug, as things seldom worked as well on a PCB as they did "spiderwebbed".

--- End quote ---

My first large PCB was double sided with, IIRC, ~80 LSTTL ICs. I heard afterwards that people were amazed it worked first time. I put that down to laying out Vcc Gnd and decoupling before any signals, and being careful to put ICs where track lengths were minimised. Oh, the PCB was layed out using 2:1 reb/blue/black rubylith tape.


Some professional circuits need to be built with air-gapped components, especially where low currents or high voltages are involved. And, as I have pointed out, others use air gaps between wires as part of the circuit operation, e.g. spot the L69-L70 variable transformer in


Yes, bend the wire to get the circuit working :)

Yes, that variable capacitor, C70 is 1.2-3.5pF, the same as the inter-leaf capacitance in solderless breadboards :)

But then Tektronix engineers always knew how to push technology. (That circuit was in production 1965-1971)

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