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input coupling cap? edit: I saw you already did that... Try changing R3 to 150 ohms http://www.muzique.com/lab/boost.htm

Not too much smt experience - working on a driver board for some RD. First Question I have a 80 pin BGA array package that I *have* to use, with all other thru hole components. Somebody mentioned I need a "tooling rail". ? Cant figure out what that means. Is that just a boarder around the...

Anyone have recommendations for improving ability to see what you're doing? head set magnifiers (which version,? brand?) or microscope? camera? etc? Specifics please .... I've browsed thru all the millions of gadgets on amazon and it just makes me more confused.

YES YES - and *please* make them just a *tiny* bit smaller to fit a 1590b. All of my projects I've managed to shoehorn the 125B pcbs into 1590Bs and use top mount jacks and power (lumberg jacks work). Sometimes sanding down the insides (2.25" boards) , sometimes cutting the sides of enclosures...

I tried building some of tle LM386 circuits and found them extremely noisy and tending to oscillation. Wound up picking up RF radio stations. Had much better luck with the TDA7052 circuits.

Where can you get FV-1's these days?

yes I know - but it seems the "glossy picture paper" is **advertised** as for inkJET. Is that the right for printing with laser or is there "glossy picture paper for LASERJET ?

What's the lowest cost "reasonably" good laser you can get these days? And where / what type of cardstock did you use (brand and id if possible)? There's like 5 million different types and no clear agreement on what works best. Is the stuff called "picture paper" and is it laserjet or inkjet...

Anyone tried the "toner transfer" method for pedal artwork? Looking for recommendations and success stores on what brand of paper etc My -pedals have a thin (0.030") aluminum 2.1"x2.1" plate where all the graphics are - so Im not heating a large area and I would think this method would have at...

I haven't heard the M3 but have the CKIII versions and did my own board Good stuff ABM This headphone amp projects sounds like a ton of fun!

Thanks - they're likely pretty similar in quality And thanks for the tip about the lengths - I'll order with that in mind

Are the Tayda standard 16mm same as or as good as the Alpha? Anyone have issues with either? Just curious - they look the same - likely from the same factory.

Maybe stupid question but I dont have schematic... the four1uF electrolytic caps - short on them right now but have 2.2uF - ok to use or is anything going to blow up etc?! Or even 1uF film?

THANKS!

Looks like the post office is dong their typical bang up job of delving my pcb of this ;) In the meantime - any prelim parts list for this yet?

AWESOME - I happen to have a BTDR-3H just laying around waiting for this pcb!!

Thanks - I get that. I mean there should be direct connection to the ground pads (circles) with no thermal pad relief like in a normal ground thru hole pad.

Thanks - am I right in assuming that there are no thermal isolation pads on the top surface (to ground)? that the solder mask is what "borders" the pad for the bga package?

Its an LTM8054 for a stepper motor driver (not my selection, not my choice.)

Thanks - appreciate the tips. I think I have a strategy - now trying to understand BGA and its requirements, therma vias, etc.