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Power Supply Construction for Use on Printed Circuit Boards

IP.com Disclosure Number: IPCOM000046985D
Original Publication Date: 1983-Sep-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 2 page(s) / 87K

Publishing Venue

IBM

Related People

Henley, BL: AUTHOR [+4]

Abstract

This construction enables a power supply assembly to be mounted on a variety of different printed circuit boards in such a way that the circuitry associated with the power supply need not be laid out anew on each of the different boards. As indicated in the drawing, this is accomplished by mounting the power supply circuitry on a flex card 1 which is, in turn, mounted on a heat sink 2. The flex card 1 and heat sink 2 are bonded together, and the entire assembly is then mounted on top of a transformer 3 by means of mounting screws 4. Some of the circuit components for the power supply circuitry are indicated at 5 and 6. The leads for these components pass through oversized holes in the heat sink 2 and are soldered to the printed circuit pattern on the flex card 1. These leads do not make contact with the heat sink 2.

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Power Supply Construction for Use on Printed Circuit Boards

This construction enables a power supply assembly to be mounted on a variety of different printed circuit boards in such a way that the circuitry associated with the power supply need not be laid out anew on each of the different boards. As indicated in the drawing, this is accomplished by mounting the power supply circuitry on a flex card 1 which is, in turn, mounted on a heat sink 2. The flex card 1 and heat sink 2 are bonded together, and the entire assembly is then mounted on top of a transformer 3 by means of mounting screws 4. Some of the circuit components for the power supply circuitry are indicated at 5 and 6. The leads for these components pass through oversized holes in the heat sink 2 and are soldered to the printed circuit pattern on the flex card 1. These leads do not make contact with the heat sink 2. Transistors are mounted on the heat sink 2 in the manner indicated at 7. The outer end 8 of the flex card 1 is bent around, and the appropriate holes 9 therein are mounted on terminal pins 10 on a connector block 11 secured to the bottom of the transformer 3. The entire assembly can be encapsulated, if desired. This entire power supply assembly is mounted on a desired printed circuit board by inserting the connector pins 10 into appropriate receptacles on the printed circuit board and soldering same in place. Heretofore, the circuitry on the flex card 1, including the printed wiring pattern,...