Hello, everyone,
I'm working on a scientific experiment. We need to charge magnetic coils up to 500A. Due to the limited budget, we are using car batteries. The good things are: first, car batteries is much cheaper; second, car batteries provide no ripples; and third, the internal resistance is low . The bad thing is after each discharge for about 5 seconds, the voltage of it drops a bit.
Is there anyone knows whether there is any low-cost method to provide a more stable voltage for like 1 minute? I mean, some circuit using batteries power (~6.5 to 7.5V when fully charged) as input, and output a stable 6V or 5.5V dc voltage for 1 minute?
I did think about the possibility of switch-mode power supply or linear power supply. But one issue concerns me. We want to pulse the coils and observe how the magnetic field in our device rises, which usually takes about 100ms. With the batteries, the coils take <1ms to reach the maximum. But I'm not sure any (low-cost!) switch-mode or linear power supply do that.
Anyone has any idea?
Thanks!
I'm working on a scientific experiment. We need to charge magnetic coils up to 500A. Due to the limited budget, we are using car batteries. The good things are: first, car batteries is much cheaper; second, car batteries provide no ripples; and third, the internal resistance is low . The bad thing is after each discharge for about 5 seconds, the voltage of it drops a bit.
Is there anyone knows whether there is any low-cost method to provide a more stable voltage for like 1 minute? I mean, some circuit using batteries power (~6.5 to 7.5V when fully charged) as input, and output a stable 6V or 5.5V dc voltage for 1 minute?
I did think about the possibility of switch-mode power supply or linear power supply. But one issue concerns me. We want to pulse the coils and observe how the magnetic field in our device rises, which usually takes about 100ms. With the batteries, the coils take <1ms to reach the maximum. But I'm not sure any (low-cost!) switch-mode or linear power supply do that.
Anyone has any idea?
Thanks!