25 Feb
2019
25 Feb
'19
11:49 a.m.
anybody haz a circuit diagram that limits current through a transistor by
means of adjusting the duty cycle of a microcontrolloer (arduino/esp8266)?
seems like all the diagrams i can find use a current sense resistor & not
the mcu
thx4haxing
25 Feb
25 Feb
12:02 p.m.
if you use a FET you can put a resistor in series with the source to ground,
amd the 5v gate drive coming from the microcontroller will be lessened by the
resistor voltage drop. we can look at it tomorrow night if you want.
On Mon, 25 Feb 2019, robb wrote:
anybody haz a circuit diagram that limits current
through a transistor by
means of adjusting the duty cycle of a microcontrolloer (arduino/esp8266)?
seems like all the diagrams i can find use a current sense resistor & not
the mcu
thx4haxing
12:08 p.m.
New subject: current limiting with microcontroller & transistor
hmm, ok, thx
i haz some darlingtons but i'll look for some FETs
On Mon, Feb 25, 2019 at 12:02 PM Jake <jake(a)spaz.org> wrote:
if you use a FET you can put a resistor in series with
the source to
ground,
amd the 5v gate drive coming from the microcontroller will be lessened by
the
resistor voltage drop. we can look at it tomorrow night if you want.
On Mon, 25 Feb 2019, robb wrote:
anybody haz a circuit diagram that limits current
through a transistor by
means of adjusting the duty cycle of a microcontrolloer
(arduino/esp8266)?
seems like all the diagrams i can find use a current sense resistor & not
the mcu
thx4haxing
2127
days inactive
2127
days old
2 comments
2 participants
participants (2)
-
Jake -
robb