which means the value the resistor was designed to have. The fourth band tells you thetoleranceof the resistor, which indicates how far off the nominal value the actual resistance could be. (The manufacturing process isn't perfect, so most resistors are a little off.) ...
With a constant voltage source you could use any combination of resistors where their ratio is 2 to 3, for example you could use 40ΩΩ and 90ΩΩ, but each different pair of values will give you different currents. They don't take the power supply current rating and divide i...
I'm using a zener diode because the car voltage is not always 12V, so I want to regulate the voltage that is controlling the transistor base. If you know a much better way to achieve my needs, they are welcomed, but please help me understand how to calculate those ...
There’s a ton of components that you’ll end up using, but none can beat the infamous of them all – the simple resistor. If you have ever looked at a circuit board, you’ll find resistors are all over the place, controlling the current flow and making those LEDs light up. But wha...
Next, connect the calculated value of resistors as discussed in the previous section to any one of the free ends of each series, you can connect the resistor at the positive end of the string or the negative end, the position doesn't matter because the resistor just needs to be in line...
Find the value of the collector voltage (Vcc), biasing resistors (R1 and R2), the collector resistor (Rc) and the emitter resistor (Re). Use the transistor circuit drawing on the Learning About Electronics webpage (see Resources for link) as a model of how these circuit parameters connect...
The first factor is to have a value that isnot too small. If the value is too small a lot of current will flow through the resistor, which makes it really warm and could break it. What is “too small”? Standard resistors often have a power rating of 0.25W (Watt). ...
I understand the same amount of charge that enters the resistor leaves, but current is defined to be charge per time. The way I understand it, resistors slow down the speed of electrons, so even though the same amount of charge that enters, leaves, the speed is different, so the current...
This method can be used to read any 3, 4, or 5 band through simple digit look-up and multiplication. Request PCB Manufacturing & Assembly Quote Determining Tolerance Resistors The color of the tolerance band indicates the precision of the marked resistance value. Commontolerancesinclude: ...
Re: How to measure 1, 10 and 100GOhm resistors? « Reply #2 on: March 17, 2020, 07:28:05 pm » I guess that no one thought of the obvious.A gigavolt supply and a clamp on ampmeter. Logged goaty Regular Contributor Posts: 206 Country: Re: How to measure 1, 10 an...