What resistance should you cycle at?
Aim to maintain a cadence (measured on the cycle console in revolutions per minute or RPMs) of 80 to 100 RPMs on “flat ground” (low to moderate resistance) and 60 to 80 RPMs on “hills” (moderate to high resistance). If you find yourself struggling to maintain 60 RPMs, decrease the resistance.
What resistance is flat road?
Generally, we cue flat road resistance to be between 20 and 35,” Wilpers said. But if you’re sprinting, you want to aim for a higher cadence between 80 and 100 and a resistance between 40 and 50, Wilpers said. On an incline, the cadence is typically lower at 60 to 80 and the resistance higher between 40 and 50.
Why do we need resistor connected to the base of the transistor?
However, you do not need a base resistor if you operate the transistor in the common collector configuration sometimes called an emitter follower. This is because any current flowing through the emitter load cause the voltage on the emitter to rise to a point where it is 0.7V below the voltage on the base and prevent any further current flowing.
What’s the resistance of a 5V transistor?
This seems to be in the OK area for these transistor types. It appears that you intend to drive the base from a 5V signal. With a nominal Vbe of 0.7V that leaves you with a 4.3V drop across the base resistor. Resistance to limit current to 5.32mA at 4.3V is approximately 800 ohms.
Why do you need a base resistor for a BJT?
The BJT is a voltage controlled device and hence current is not the driving factor for switching. The base resistor needs to be large enough to prevent damage to the transistor, but should still allow sufficient current to ensure the transistor switches on and off as per the base voltages.
How to calculate base resistor for Arduino transistor?
This seems to be in the OK area for these transistor types. It appears that you intend to drive the base from a 5V signal. With a nominal Vbe of 0.7V that leaves you with a 4.3V drop across the base resistor. Resistance to limit current to 5.32mA at 4.3V is approximately 800 ohms. Use an 820 ohm standard value base resistor.