Fig 10a The schematic diagram of additions for providing a 10-watt scale for the aquot;Simple Computing SWR Meteraquot; (July 1973 QST). Circuitry added is ... in the 10- watt position. U3, U4a General-purpose operational R3, R6a 10-kfi, potentiometer. amplifier, 741 CN or TL081. ... to cause damage. A temperature of 200Ad to 300Ad F should not harm the magnet, but you could hold it in a wet rag to keep it cool.
|Title||:||Hints & kinks for the radio amateur|
|Author||:||C. L. Hutchinson, David A. Newkirk|