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My little Amplifier
jgmdesign wrote: Look at all those 4 way connections!   All three of them?  Humph.    S.
Wednesday, 18 March 2020 - 16:33
My little Amplifier
Um, no, the point isn't that a constant current passes through the diodes.  The point is that MORE current passes through the diode(s) (or equivalent) as it gets hotter!...
Wednesday, 18 March 2020 - 16:29
My little Amplifier
jgmdesign wrote: Scroungre wrote:Class A amps are going to be even less efficient, because they blow off power even while quiescent. Correct.  But thats the price you pay for...
Wednesday, 18 March 2020 - 15:29
My little Amplifier
The point of using a thermally-coupled Vbe multiplier is to counteract the change in gain of your power transistors as they get hot.  In short, as they get hotter they get...
Wednesday, 18 March 2020 - 15:20
Pi driven relay
Oddly enough, I have a system I designed that is still in production that involves soldering to #6 nuts'n'bolts.  We insist on brass, and with a gun (and traces on the PCB...
Wednesday, 18 March 2020 - 14:49
My little Amplifier
jgmdesign wrote: And that has been the common standard as the sound is excellent for about 95% of the world.  I prefer Class A myself, but hey.  Give teh OP a break and...
Wednesday, 18 March 2020 - 14:42
Pi driven relay
MarkThomas wrote: Question:  Can I use a standard 1N4148 across the relay coil for protection, or should I be using something like a 1N4007 because of the potentially high...
Wednesday, 18 March 2020 - 14:23
My little Amplifier
Cute trick with the Szikai (sp?) driving, where you have opposite types instead of a (more) common Darlington arrangement. Suggestions:   1) Specify Vcc and Vee. 2) Stick Q8...
Wednesday, 18 March 2020 - 10:24
Battery powered lamp -> add a dimmer // design consideration
And throw in the human eyeball's non-linear response to brightness (especially when the rest of the world just went dark) and it'll look even weirder.  But we're getting a...
Wednesday, 18 March 2020 - 09:15
Battery powered lamp -> add a dimmer // design consideration
avrcandies wrote: That's somewhat ridiculous...you can't get too far hooking leds in parallel (unless they are tightly matched), otherwise some may be very bright & ...
Wednesday, 18 March 2020 - 08:36
IoT Design Week 2020
Historically on this channel, the power drains have been the pullup resistors.   It's a tradeoff between noise immunity and power consumption.  It's engineering - there...
Friday, 13 March 2020 - 16:13
IoT Design Week 2020
Design Week Twenty And corona viruses Best wishes to all. S.
Friday, 13 March 2020 - 14:47

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