...the output voltage of the charger. R1 and R2 can be 1/4W resistors, R3 needs to be at least 10W. Load current will be about 0.98 amps; you...

...in the neighborhood of 28V. If you don't have appropriate power resistors, you could make an electronic load using a voltage regulator like an...

Apparently you can also get resistors disguised with SMD semiconductor codes - but in one of the pictures, the part in question has a polarity bar...

This true for Part A of the question, but say two, 2K resistors were used to give 6v at the junction. How could you get the required 3V at the...

...well suited for them. If you want to have "kits", like kits of resistors, capacitors etc, which will cover your needs for a while, Mouser may...

...in series, 3 lines would need 3 CC controllers; or with a 5 V regulated supply all in parallel with resistors & as suggested in post #4- 9...

As long as the two resistors are of equal value and are in series the voltage will remain the same. I x R = V V/R = I V/I = R

Power is measured in watts, not milliamps (which is a measure of current). Power in an electric circuit is the product of a voltage difference...

...Power dissipated by R2 =12volts/200ohms =0.060mA When you add 0.240mA and 0.060mA you get 0.300mA which is the current going into the resistors.

Thank you very much for the help. This is the first time seeing subtracting in this formula. where you say R1-Rt gives you R2. it works great,...

I would use the formula 50x200/50+200=40 ohms that formula I have not problem with. I still don't know how to come up with the missing value for...

You have two resistors. One of them is 50 Ω and the other is 200 Ω. What is the total resistance of these two resistors if placed in parallel?

...5.399k or less. Let's change the feedback loop to use 4.7k resistors. That allows a 100pf capacitor with a 10% accuracy guarantee to get the...

...Itotal = 300 mA = IT R1 = 60 Ohms. We also know that the two resistors are connected in parallel, so both resistors are connected to 12...

I am looking at your formula in post#9 but I am trying to get the answer for R2. I need a formula for using Rt and R1 to come up with R2.

Ok thanks

...Do you know the formula for finding total resistance of resistors in parallel? I posted it in reply #9:...

Note that both bases are effectively supplied from 0V. The base resistors cause a small voltage drop. V(ee) has to be -0.6V or so below the...

...are 2N3055 and MJ2955 or a close equivalent. All 220mOhm resistors are wirewound or rated 5W at least. The 56ohm resistors are 1W and their...

I can't do your homework, From part A you know that the resistors must have equal value, lets say R From B you know the voltages in the circuit....