parallel capacitors calculations

Parallel Capacitors Calculations

Let’s see parallel capacitors calculations. Capacitors connected in parallel are connected side by side and their terminals joined together so that the same applied potential difference (Pd) appears across each of them but each has a different magnitude of charge (Q) across it. The figure below shows three capacitors connected in parallel. The same potential […]

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variable capacitor symbol

VARIABLE CAPACITORS

Variable capacitors are mostly use in radio tuning circuits and sometimes called “tuning capacitors”. They have very small capacitance values, typically between 100pF and 500pF. Many of them have short spindles, which are not suitable for the standard knobs use for variable resistors and rotary switches. Variable capacitors are not use in timing circuits because

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Non polarized capacitors

Non Polarized Capacitors

These are value capacitors and they are not polarized. Non polarized capacitors they can be connected either way round. They are not damaged by heat when soldering, except for one unusual type (polystyrene). They have high voltage ratings of at least 50V, usually 250V and so on. It can be difficult to find their values

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Polarized Capacitor

Polarized Capacitors

Polarized capacitors must be connect correct way otherwise, will be damage if connected wrongly. At least one of their leads (terminals) is mark either “+” or “−”.  Examples of these capacitors are (with brief descriptions): Electrolytic capacitor Electrolytic capacitors may be found in these two different forms; AXIAL (where the leads are built to each

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WHAT ARE CAPACITORS

Capacitors are passive two terminals electronic components that store energy in form of electrical field. Practical capacitors contain at least two electrical conductors (plates) separated by a dielectric that is; insulator. The conductors can be thin “non-conducting”. Dielectric acts to increase the capacitance. That is; capacitor’s ability to store charge. A dielectric can however be

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Resistor colour codes table

Read Resistor Colour Codes

Resistors colour codes system of determining unknown resistor’s value could be hard to be used. But in this post I published, “How to Read Resistor colour codes” makes things easy and simple. Resistors which their values are not printed on them use colour codes for their resistance identification. This article on resistor colour codes teaches

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State Ohms Law and its Limitations

At the end of this post, you should be able to state ohms law and its limitations respectively. OHM’S LAW A German Physicist George Simon Ohm in 1926 made an experiment and observed that for any good conductor, there is a relationship between current (I) flowing through the conductor and the potential difference (V) across

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