[Ben_Tech]

I have been working on the following compact power supply layout.

The size is 2.5" x 3.8".

Please comment, especially if there is a problem with the layout. I consider this to be the 'Alpha' version.

The parts list would be as follows:

(2) Digikey# OPA548T IC POWER OPAMP TO-220-7

(1) Digikey# REF02AP-ND IC PREC VOLT REF +5V 8-DIP

(2) Digikey# 3009P-203-ND 20K OHM 3/4 RECT CERM MT POT

OR

(2) Vishay 1280G bulk metal foil .75W, 15ppm, 26 turn 20k trimming pots

(1) Digikey# 296-9535-5-ND LM317KC IC VOLT REG POS ADJ TO-220AB

(1) Digikey# 296-9550-5-ND LM337KC IC ADJ VOLTAGE REG TO-220AB

(1) Digikey# A24794-ND 08C DIPLOMATE DL SKT 30AUBECU (Dip8 socket)

(4) Digikey# 345-1037-ND HEATSINK TO-220 W/PINS

(4) Digikey# 345-1039-ND SPEEDCLIP S/S FOR 667 SERIES (clips to hold heatsinks on)

(8) Digikey# 31DQ10-ND DIODE SCHOTTKY 100V 3.3A DO201AD

(4) Digikey# P5172-ND Panasonic 4700uF Aluminum Electrolytic Radial Cap

(4) WIMA MKS 4 Series, 4.7uF, 63V, 5%, 15mm LS, Bulk Capacitor Polyester Film Metalized

(2) MOUSER#71-RN60D-F-243 240 OHM 1% METAL FILM RESISTOR

(3) MOUSER#71-RN60D-F-10K 10K OHM 1% METAL FILM RESISTOR

(1) MOUSER# 71-RN60D-F-22.6K 22.6K OHM 1% METAL FILM RESISTOR

 

[OtterMarc]

Ben,

Your 240 ohm resistor by the LM337, the left connection goes to where?

Marc

 

[Ben_Tech]

Good eye. Thanks.

Note: I have dropped this project for now, I am enjoying my Gilmore too much to build more atm.

Anyone that wants the .pcb file to play with just PM me with an email. (Though I'll warn you, getting small lots made is outragously expensive!)

 

[OtterMarc]

Ben,
I'd like the .pcb for quicker learning. What is is, a PCB123 file?
Maybe pm or email?

thanks
Marc

 

[Ben_Tech]

I've fixed the 240 ohm resistor. The file is in Express PCB format. (www.expresspcb.com).