Is Cranking Speed or Duration More Effective for Charging a Hand-Cranked Radio?

  • Thread starter Thread starter snoggerT
  • Start date Start date
  • Tags Tags
    hand Radio
Click For Summary
SUMMARY

The discussion centers on the efficiency of charging a hand-cranked radio by comparing cranking speed versus duration. It is established that the number of cycles completed in a given time frame directly affects the charging efficiency. Specifically, cranking at a higher speed (e.g., 180 cycles in 1 minute) is more effective than a slower approach (e.g., 180 cycles in 2 minutes) due to the increased generation of electrical current. The type of battery, while not specified, is assumed to be non-lead acid, which typically requires a consistent and higher charging current for optimal performance.

PREREQUISITES
  • Understanding of hand-cranked generators
  • Knowledge of battery charging principles
  • Familiarity with non-lead acid battery characteristics
  • Basic electrical concepts related to current and voltage
NEXT STEPS
  • Research the efficiency of hand-cranked generators
  • Study the charging requirements of non-lead acid batteries
  • Explore the relationship between cranking speed and electrical output
  • Investigate optimal cranking techniques for energy generation
USEFUL FOR

Engineers, hobbyists, and anyone interested in renewable energy solutions, particularly those working with hand-cranked devices and battery technology.

snoggerT
Messages
183
Reaction score
0
hand cranked radio question (ignore - figured out)

Your two friends argued whether they should crank more cycles (e.g. 180 cycles in 1 minute) or longer time (e.g. 180 cycles in 2 minutes) to efficiently charge the internal batteries. They couldn't conclude with their knowledge and decided to ask you about this. What would be your professional opinion?




The Attempt at a Solution



I'm not really sure on this one. It seems like speed would be a factor, but I'm not sure if the generator is only reliant on the number of turns. Can someone please help?
 
Last edited:
Physics news on Phys.org
They don't specify the type of battery but I'm assuming they aren't lead acid batteries. What do you know about recharging currents of non-lead acid batteries?
 

Similar threads

Automotive Recharge an RV battery by hand cranking a generator
  • · Replies 55 ·
2
Replies
55
Views
13K
Can a Doctor's Office Charge Much More Than Another?
  • · Replies 38 ·
2
Replies
38
Views
5K
Undergrad Same old question, I still don't get it: E=1/2mv^2 - more E with V?
  • · Replies 41 ·
2
Replies
41
Views
4K
Graduate Speed of gravity and planetry orbits
  • · Replies 11 ·
Replies
11
Views
2K
Building a Safe and Efficient Induction Heater Circuit: Tips and Tricks
  • · Replies 7 ·
Replies
7
Views
8K
Chemically regenerating my auto's catalytic converter?
  • · Replies 19 ·
Replies
19
Views
10K
Graduate Is a Small Space Hadron Collider More Efficient than a Large One?
  • · Replies 26 ·
Replies
26
Views
4K
The case for a methanol-based economy
  • · Replies 7 ·
Replies
7
Views
6K
Schools University Choice for Theoretical Physics
  • · Replies 2 ·
Replies
2
Views
3K
What if Gravity could be controlled?
  • · Replies 1 ·
Replies
1
Views
4K