SSR01 and SSR02 super regulator group buy

[peranders]

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:

• 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.

 

[TNT]

Voltages and amps?

//

 

[peranders]

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.

 

[peranders]

I have prepared my wiki page for this group buy. See link in my signature.

 

[peranders]

The wiki page is up but I may have to adjust the dates a bit.

 

[peranders]

The first one has signed up on my list.

 

[peranders]

A couple of more pcb's in the list.

 

[peranders]

I will move my plans a bit since it's some distance left to the set target.

 

[peranders]

A few more boards in interest but it must be more before I can order.

 

[peranders]

Some more boards in interest.

 

[peranders]

Summer is coming and I have moved the project to after my vacation.

 

[peranders]

What do you say guys, shall we bring this group buy alive again?

 

[merlin el mago]

Price?

 

[peranders]

You have the price in the link in my sig.

 

[merlin el mago]

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."

 

[nopants]

I'm interested in the GB, do we have to make an account on that wiki page in order to pencil in interest?

 

[peranders]

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.

 

[peranders]

A few more boards are on list- Let's see how it goes after Christmas.

 

[gupsta]

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.

 

[peranders]

The purpose of the list is to show the interest. There are no obligations.