Peter Demchenko

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Peter Demchenko

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  • 11.21.2017
  • Majestic microcontroller mixup
  • Suppose a pipelining or look-ahead fetch does not abolish cycles at all?) All these controllers are consecutive finite automata, so machine cycles or micro-machine cycles, sub$1 or $100 - what a difference?
  • 11.13.2017
  • Resurrecting a 6-amp battery charger
  • Good job and good charger after all. Albeit I hardly imagine any landing on the Moon using any design of this kind. Nevertheless the item was of use more than 30 years -true antique item for electronics.
  • 09.06.2017
  • Beware the TO-220
  • (Ahem) sometimes this is not a problem comparing with the issue within the package!
  • 08.14.2017
  • The weed-eater circuit
  • Yes, assuming a correct answer of the pretendent, the next obvious question - about the gain this stage of amplifier can provide - seems superfluous!
  • 05.31.2017
  • Double µC’s PWM frequency & resolution
  • In its essence a PWM signal is a pulse wave. To get a PWM signal with 180° phase difference it is sufficient to invert the original PWM. If the both amplitudes are equal and the inverter is fast enough you'll get a complementary PWM signal(s)... Agree? I can't see which use can you have from the Fourier series here.
  • 05.24.2016
  • LED current regulator has low dropout
  • What about to read the text one more time? It deals with the lowest possible drop... The 20V is a very modest value, why not 1000? :) And "Q3's parameters" include not only "beta"... Sapienti sat :)