Linked Questions

3
votes
2answers
16k views

Can two electrolytic capacitors be made into a bipolar? [duplicate]

I know if you put an electrolytic capacitor backwards they explode and it's quite fun to observe them exploding. I am wondering if you can use two of them (and some diodes) to turn it into a bipolar ...
-1
votes
4answers
1k views

Using electrolyte capacitor in AC application [duplicate]

I know electrolyte capacitor explode when used in AC current but Can we using two parallel electrolyte capacitors as shown in fig. for AC applications since they have lower size than PPC capacitors (...
1
vote
0answers
97 views

Paired Polarized Electrolytic Capacitor to Form Non-Polarized [duplicate]

A quickie... I needed a 1uf non polarised cap for a circuit which I didn't have so I found info that said I could join the + of two polarised caps and connect the two - terminals into the circuit to ...
2
votes
0answers
85 views

Super capacitors as DC blockers [duplicate]

Can two super capacitors connected in series back to back be used as DC blockers when in series with an AC supply and load, regular polarized capacitors can be used in this mode, but is there ...
27
votes
10answers
37k views

What are some reasons to connect capacitors in series?

Usually you either combine capacitors in parallel because you want to increase the total capacitance while fitting the components in a certain shape/position, or you just combine capacitors by buying ...
1
vote
4answers
17k views

How do I increase the voltage limit by connecting same capacitors?

Assume a capacitor's voltage limit be v, and the target voltage limit be V. What is the way of connecting the capacitors to reach the V?
5
votes
4answers
7k views

How do I reverse my electric motor?

For a pet project I am doing (trying to fly a kite using my computer) I need to move and reverse an electro motor to my liking (I took the motor from an old hand-held vacuum cleaner). I need to ...
5
votes
6answers
2k views

Determining the correct polarity of a supposedly wrong polarized capacitor

I'm fixing an audio interface (Scarlett) that was behaving poorly and found a likely culprit - a bulging capacitor. However, it appears to be soldered on the board backwards (based on the `screen on ...
6
votes
3answers
3k views

Is it safe to use series polarized capacitors to form non-polarized capacitors to be used for higher rated voltage?

simulate this circuit – Schematic created using CircuitLab It is known that we can use series capacitors to increase rated voltage. But I want to know how far we can push this feature to? ...
1
vote
5answers
4k views

Effect of capacitor type in an active filter circuit?

Below is a unity-gain low-pass filter implemented with a Sallen–Key topology: If C1 and C2 is large, are electrolytic capacitors recommended? Similarly, if C1 and C2 is small, are any type of ...
2
votes
2answers
6k views

Eliminate PWM noise in PWM-driven bidirectional motor

I need to drive a DC motor with PWM, through a H-bridge. The controller can't generate PWM at ultrasonic frequencies with resolution I desire, and the low-end of the spectrum (~100Hz) may be too slow ...
2
votes
3answers
2k views

Using parallel capacitor-diode pairs to limit current in an AC circuit

I want to limit current from an AC source using capacitors. As I am using dielectric (polar) capacitors, I thought I could use 2 capacitors with opposite polarity in parallel with a diode in front of ...
2
votes
3answers
1k views

High Pass Filter configuration with diodes and electrolytic caps?

I'm quite new to electronics and I'm trying to make a high pass filter to get rid of some DC component of a signal. For that, I thought of using a capacitor along with a resistor in the usual HPF ...
-1
votes
1answer
768 views

Polarity of of capacitors

I understand that similar questions have already been asked but haven't been able to apply them on my problem. I am working on Double integrator circuit as below (to simulate a physical system for my ...
1
vote
1answer
952 views

Can I make a non-polarized cap from 2 polarized caps with different values

So I need a 1uf non-polarized electrolytic capacitor for a circuit I found. But I don't have one. I found on the internet that you can make one by placing 2 caps with the same value and the same ...

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