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Archive for the ‘Resistor’ category

Resistors in Series

6 September 2013 - Basic Electronics, Passive Components, Resistor - Hypsine Electronics - No Comments

In this article we are talking about the resistors in series, how to calculate the equivalent resistance and about the voltage divider. Consider the following picture: resistors in series and the equivalent resistance (click to enlarge) In circuit 1 we have 2 resistors R1 and R2 connected in series and in circuit 2 is shown […]

Resistors in Parallel

6 September 2013 - Basic Electronics, Passive Components, Resistor - Hypsine Electronics - No Comments

In this article we talk about resistors in parallel, the equivalent resistance and the current divider rule for parallel connection of resistors. Let’s consider this circuit: resistors in parallel and equivalent resistor (click to enlarge)   In circuit 1 we have two resistors R1 and R2 connected in parallel and in circuit 2 the equivalent […]

Power Resistors

6 September 2013 - Basic Electronics, Passive Components, Resistor - Hypsine Electronics - No Comments

The resistance heater is a very common appliance in temperate climates – they range from 1 to 2kW and operate on 115 or 230VAC. Some are radiant (glow red) while others are forced air. While some manufactures boast the highest efficiency, they are actually all 100% efficient in converting electricity to heat. The inefficiency actually […]

Why resistor color codes?

6 September 2013 - Basic Electronics, Passive Components, Resistor - Hypsine Electronics - No Comments

I once worked with an engineer that often checked his resistors with a multimeter before use. I just assumed that he was just being careful (certainly more careful than I…). Then one day, he asked me to identify a certain resistor — it was a 2.2K resistor with 2 or 3 shades of red. He […]

What is a Resistor?

6 September 2013 - Basic Electronics, Passive Components, Resistor - Hypsine Electronics - No Comments

what is a resistor? A resistor is a material that resists, limits or impedes the flow of electrical current. Resistive materials include carbon and various metallic alloys such as nichrome. Resistors are the most common electronic component — DigiKey lists some 550,000 resistors — WOW! They come in all resistance values, tolerances, types, mounting styles, […]