ncallen

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Principal Engineer

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ncallen

's contributions
  • 08.14.2017
  • The weed-eater circuit
  • No, just sayin' that assuming pnp saturation would be immediately recognized as impossible.
  • 08.14.2017
  • The weed-eater circuit
  • As assumption has been made at step two that the PNP has not been saturated. It would be clear that the emitter of the NPN would be driven to nearly 6V, thus cutting it off. Analysis would continue from there.....
  • 02.02.2012
  • Implement an audio-frequency tilt-equalizer filter
  • Easier: LEFT-CLICK at beginning of copy area. Click to drop anchor. Cursor at end of copy area. SHIFT-LEFT-CLICK. Much easier when highlighting a lot of text. This works in a surprising number of places, like in directories to highlight files...etc.....
  • 09.30.2013
  • Two-quadrant multiplying DAC utilizes octal CMOS buffer
  • What's this about? 23 resistors to get a rather poor current-output DAC? And it's only a partial (2V---7V) two-quadrant multiplier? For a few bucks or so you can get real 4-quadrant multplying DACs with a whole lot less manufacturing costs.