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I have just been introduced to time constants and I'm having some trouble with this question.
What frequency value do you plan to use to obtain the correct time constant for a 22 kΩ resistor? (Hint: It takes five time constants for a capacitor to go through the full charging...
As a reference to my question; I know that a 10K ohm resistor that has a parasitic capacitance of .3pF at 200MHz will have a actual impedance value of 2.564K ohms. If this resistor is used in a bias network for an RF amplifier, how does this shift in resistance effect the RF operating point...
Simple LED circuit doubt.
Assume : I have a LED with forward voltage of 3.0 V and forward Current of 350mA.
With 9V battery, i would be calculating the required Resistance with the Ohms law :
R = ( Source Voltage - Forward Voltage) / Forward Current.
Here we dont consider the Current Ouput...
I was hoping some can help me figure if i can use SRD-12VDC-SL-C, to turn may parking light into blinkers.
Here is the issue;
I purchased aftermarket blinkers for my motorcycle, these only light up while blinkers are turn on, making you less visible during regular operation.
even though this is not really a electronics project in itself, it might be useful for many of you.
After spending a lot of time decoding resistors and still don´t knowing the color code table by heart, I chose to write an app to detect the resistors for me.
I am new to Android...
I will admit from the git-go that i am almost totally electronically illiterate. So please factor that into any responce.
Here is what i am trying to accomplish. I would like to use a toy steam engine dynamo to power a USB port for the purpose of charging phones etc.
Here is a link to a...
I'm trying to create an electric heater for an insect repellent mat.
The only constraint is that I must use a 18650 battery.
The mats are about 35x50 mm and they need to be heated at about 130F.
In the chat, Mike_2545 suggested a power resistor like this one
and also pointed...
Got this charger given to me if it was worth repairing.
I found both transistors shorted to zero ohms across all terminals and the resistor blown open circuit.
See the hole in the yellow band.
Don't know what caused it but I reckon it is a throwaway.
Alright, my question is pretty simple to ask but perhaps rather difficult to solve.
I am modelling in LTspice a channel of previous design and analysing various noise figure across the channel.
Currently I am using the stock resistors supplied in LTspice. I was wondering if there is a way to...