QUESTIONS re: MEGA-WATT 33-AMP POWER SUPPLY
This critter can be found on eBay. It is a switching type power supply. Supposed to have an ultimate amperage potential of 33, voltage adjustment of 10, to 15, and work fine as a long term battery ...
Forum Discussion
I accidentally connected 12 volts to a 5 volt 10mm fan and the thing lifted off the table almost a foot, started to revolve then flipped over. But yes, being isolated by my brand new 300 ampere shottky rectifier pair the fans could be controlled directly as output controlled.
The Intermatic spring-wound timer is damned near bullet-proof for single shot usage. Interval timing needs AC to work.
Use a clock or timer of both
Note starting voltage
Set voltage to 14.5
Give the batteries 3 hours to top charge
Exchange higher voltage for less time when running a generator but limit to 14.8
Once you get the voltage + time formula it does not change for top charging. Twist the timer dial X number of hours and walk away.
By using a 1-2-Both battery switch you can divert output AWAY from the rectifiers. Use an ON-On-On 1-2-both toggle to direct incoming AC voltage AFTER the timer.
Use the pot within the charger as it comes from the factory. It is a power supply, so set voltage on the bench with a DMM. You are allowed to do this, then connect it to a battery and tweak to taste.
This makes a tiny charging unit that is almost infinitely adjustable. I really do not want to keep a 100 ampere rated unit busy delivering 1 amp of maintenance float to a battery. Multi-tasking a 100 amp unit to achieve the flexibility of what I outlined above would be a challenge.
The Intermatic spring-wound timer is damned near bullet-proof for single shot usage. Interval timing needs AC to work.
Use a clock or timer of both
Note starting voltage
Set voltage to 14.5
Give the batteries 3 hours to top charge
Exchange higher voltage for less time when running a generator but limit to 14.8
Once you get the voltage + time formula it does not change for top charging. Twist the timer dial X number of hours and walk away.
By using a 1-2-Both battery switch you can divert output AWAY from the rectifiers. Use an ON-On-On 1-2-both toggle to direct incoming AC voltage AFTER the timer.
Use the pot within the charger as it comes from the factory. It is a power supply, so set voltage on the bench with a DMM. You are allowed to do this, then connect it to a battery and tweak to taste.
This makes a tiny charging unit that is almost infinitely adjustable. I really do not want to keep a 100 ampere rated unit busy delivering 1 amp of maintenance float to a battery. Multi-tasking a 100 amp unit to achieve the flexibility of what I outlined above would be a challenge.
