Op Amp + Mosfet current source help | All About Circuits
Feb 16, 2025 · Having issues with an Op amp + Mosfet current source Circuit. When RL is in Circuit I only get about 16mv, and Op amp Pin2 drops to the same value, when Rl is out of …
Adjustable constant current source (100-500mA output)
May 25, 2023 · The output current of the current driver should be adjustable between [100mA -500mA]. It would be better to not have the potentiommeter in the 250mA current path for …
Piezo driver with +-20V using LTC7060 gate driver: 128kHz …
Aug 16, 2025 · Hello everyone, I am currently working on a piezo driver designed for a 2.5nF load with a maximum current ranging between 50 to 100mA with a frequency of 128kHz. Since the …
Battery charging @ low current - All About Circuits
Mar 5, 2011 · Hi, I want to recharge li-ion batteries with a low current 100mA(in CC-CV mode) . Is it really advisable?? will it affect the battery life?? At this charge rate i presume I no need to …
MOSFETs as a Bidirectional Switch - All About Circuits
Oct 12, 2015 · Hi, I'm trying to make a bidirectional switch using MOSFETs for a signal of 3V, 1 MHz, and around 100mA. When I use the TSM2N7000KCT MOSFETs the switch...
2n3904 - what resistor to base? - All About Circuits
Apr 11, 2009 · I agree with Audioguru about the increase in base current to get the 2N3904 to saturate. In the image, if we use Beta=10 to calculate the base current we can get Vsat down …
Current Limiter - All About Circuits
Jun 26, 2024 · Hello All I have designed the circuit for limiting the current at 100mA, by following the below video's. I just checked that does the circuit will work when decrease the load resistor …
Ammeter 'classes' what do they mean? | All About Circuits
May 19, 2010 · six different accuracy classes (from 0.5 to 4.0) and considering accidental failures only, one may state that also in terms of accidental failures does the correlation between the …
Darlington current gain calculations | All About Circuits
May 4, 2022 · I am having difficulty calculating the current gain for the attached image. This is a Toshiba darlington array IC. I want to attach 100ma leds to the chip via a 9volt power supply …
"Maximum load for extensions is 100 mA." - What does this mean?
Jul 22, 2017 · It's not constant current so you can put as many devices on the 5V pin a long as you don't exceed a total load of 100mA. Ok, but now I have another question. On the …