I have generated flyback convertor schematic by TI's Webench Power Designer.
Parameters:
universal AC input (85-265V AC)
5V, 2A output
isolated
UC3843A controller
Basically I understand f...
I'm trying to modify a LED torch, and there is a DC-DC booster (1.5 V to 3.3 V) and after that some SOT-23 device which (I assume) keeps constant 90 mA current through LED. I know I could remove th...
When switching a relay there should be a flyback diode.
It could be just a diode or diode with resistor in series.
I understand there is a difference in the speed of relay switch-off. But what is t...
I read datasheet for PCT2075 temperature sensor and there are some contradicting data about accuracy for me.
Page 21:
accuracy ±1°C (Tamb = -25°C to +100°C)
accuracy ±2°C (Tamb = -55°C to +125°C...
There are circuits that require matched transistors. Whether BJTs or FETs.
Like current mirrors, logarithmic amplifiers, etc.. There are some examples:
https://www.youtube.com/watch?v=DUlugLSroN8...
I have an opto-coupler circuit where is very slow turn off.
I can't figure out what is the cause of this problem.
It's for UART isolation, with speed 9600 baud.
Datasheet: EL357NC
Do I have som...
I changed value of resistor R318 from 10 kΩ to 1 kΩ, and that alone significantly improved off-time. From 200 μs to around 25 μs. That is much better.
So I looked into datasheet again. I found t...
