Original Publication Date: 1978-Jul-01
Included in the Prior Art Database: 2005-Feb-21
Referring to Fig. 1, heatsink casting 8 comprises a resistor heatsink portion 10 and a transistor heatsink portion 12 which are joined together by two vertical ribs 14 and 16. Horizontal ribs 18 also join parts of the casting together and connect with the vertical ribs. Resistor heatsink portion 10 includes front ribs 22 and back ribs 24, and transistor heatsink portion 12 includes front ribs 26 and back ribs 28.