Electrical Engineering Questions, Problems & Solutions : TransWikia.com ~ Page 41

Can a PTFE coated wire heat up enough to be used as a heating element

I saw a comment on another post about using PTFE coated copper wire as a heating element for a thermos. Would this setup really work under low power(the comment...

Asked on 02/16/2021 by Shimon Jacobs

2 answer

Transistor KSP44 with Ic(max) 300mA can I use it for 150mA

I have some problems to understand the datasheet of the transistor KSP44 (and transistor in general). I need to control a LED strip. I want to switch it up through...

Asked on 02/15/2021 by FrancNovation

2 answer

Capacitive voltage divider frequency response and cut-off frequency

I'm working on designing a guitar pedal based on the topology of an old tube amplifier I own. Between the amplification stages I found an inter-stage filter that I cannot...

Asked on 02/15/2021 by EdoardoG

1 answer

Measure distance using an ultrasonic sensor in a pipe

I am trying to find the distance of an object in a pipe, but I am getting wrong values using the ultrasonic sensor with an Arduino as the sound is...

Asked on 02/15/2021 by Hari

4 answer

Bad oscilloscope probe does not measure DC

I seem to have messed up my oscilloscope probe during PCB testing. Too high a voltage was applied and there was arcing between the probe and a pin on the...

Asked on 02/14/2021 by Francis Poirier

0 answer

Transient voltage supression for high voltage Thyristor or Avalanche TVS

I am making a high voltage 240 VAC 60Hz voltage measurement front end and is in need of a transient suppression device. According the a table in ...

Asked on 02/14/2021 by Jake quin

0 answer

Do I still need a resistor in this LED series design?

I'm designing an aluminum PCB containing a series of 1W LEDs. The series of LED will be powered by 24VDC and N-MOSFETs will be placed between the ground and every...

Asked on 02/14/2021 by Agriculex

9 answer

Schottky diode for MOSFET H-bridge

how can I calculate the value of the schottky diode? I use 4 MOSFET N-channel IRF1404 instead of IRF510 in the schematic The motor should withstand currents up to...

Asked on 02/14/2021 by Ricardo Casimiro

1 answer

Why does the high reverse bias voltage in a PIN diode circuit not damage the op-amp?

In this circuit designed to measure high frequency light pulses, the 30V high voltage bias input has a direct connection to the inverting input of the op-amp, despite also being...

Asked on 02/14/2021 by analog2525

1 answer

What exactly does Close Loop Speed Control System control?

I'm working on a project about controlling Brush-less DC Motor using PI(Proportional Integral) Close Loop Speed Control Method. 3 Phases Motor is driven by 6 MOSFETs, Rotor speed is sensed...

Asked on 02/14/2021 by Electronics newbie

1 answer

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