Just checking the interest for a group buy of my single channel regulators, SSR01 (positive output voltage) and SSR02 (negative output voltage).
The design has the following feature:
I will put up a google doc list for signing up interest. I will also come back with prices and conditions. The price will be good, I can assure you.
The design has the following feature:
- 4-layer pcb with 70 um (2 oz.) copper.
- Power traces 140 um!
- Gold pads.
- Extremely low noise.
- Extremely low output impedance in the audioband.
- Small size.
- Easy to change voltage, also to negative voltage but this particular design (pcb) requires two different pcb's, one for positive voltages and one for negative.
- Well-known and well-tested in serious and demanding applications.
- Option for TO92 or SOT23 transistors for the small signal transistors.
- Option for DIL08 or SO08 opamp.
- LM431 (and similar) reference or devices like LM329. The pcb has a universal footprint.
- Trimming options for both the reference and the feedback. Room for extra resistors and trimpots.
- One output with sense inputs.
- Option for using higher voltage than the max supply voltage for the opamp.
I will put up a google doc list for signing up interest. I will also come back with prices and conditions. The price will be good, I can assure you.
Attachments
3.3 or (even lower) to 30 V (or up to 40-50V with some tweaking), 500 mA and using the LM317 as a pre-reg 1,5 A is the max of that part. The regulator itself may need some adjustments to deliver over 500 mA. This has to do with current gain in the transistors among other things.
I didn't see, thanks.
"The price is 65 SEK if 200 boards are reached. Soldered opamps AD825 are offered for 75 SEK per board as a service."
"The price is 65 SEK if 200 boards are reached. Soldered opamps AD825 are offered for 75 SEK per board as a service."
I'm interested in the GB, do we have to make an account on that wiki page in order to pencil in interest?
I prefer that because then I'll get your email address in an easy way but you can also send me a message and I do it for you.
I'm interested, but it looks like it could take a long time to reach 200, which makes me hesitant to put my name down.
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