Got the Drok and an ammeter
Now how do I adjust the pots? Voltage should be easy, just connect it to the power supply unloaded and adjust the voltage pot until a voltmeter reads the desired voltage. But amps... The a...
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Connect to battery on "in" side. Observe polarity, use red/black color coded wires. Set INBOARD blue pot to 16.0 volts for equalization, or 15.0 volts for top charging.
OUTBOARD blue pot. Back off adjustment screw all the way. Don't want to blow that yellow 20-amp fuse on the DROK.
Connect "out" negative wire to battery. Connect out positive wire to DMM red lead with meter set to 10-amps. Make sure probes are in correct holes for reading 10-amps. No worries. You limited current to zero, so no sparks.
Slowly bring up OUTBOARD (amperes) pot until you start seeing a reading on the DMM. This may or may not take 1-2 turns of the pot screw.
Adjust pot to 5.0 amps. This setting will stay locked-in from now on.
Disconnect meter from circuit. Wire direct from source voltage to DROK
Verify voltage, in case it drifted a little.
Fifteen minutes down the line, fondle the heat sink underneath the DROK. It should not run hot. On really hot days, play a tiny muffin fan across the DROK.
Remember an INTERMATIC WIND UP TIMER can be used in this circuit. I recommend a 4-hour model. Plenty of amperage reserve capacity.
With the timer, an ammeter, and a verified accurate voltmeter you will have quite the machine. Amperage and voltage will need minor tweaking as the system ages. But you have the ammeter in place. I gave the instructions above for folks who do not have a dedicated ammeter (which is more than handy to have always monitoring).
OUTBOARD blue pot. Back off adjustment screw all the way. Don't want to blow that yellow 20-amp fuse on the DROK.
Connect "out" negative wire to battery. Connect out positive wire to DMM red lead with meter set to 10-amps. Make sure probes are in correct holes for reading 10-amps. No worries. You limited current to zero, so no sparks.
Slowly bring up OUTBOARD (amperes) pot until you start seeing a reading on the DMM. This may or may not take 1-2 turns of the pot screw.
Adjust pot to 5.0 amps. This setting will stay locked-in from now on.
Disconnect meter from circuit. Wire direct from source voltage to DROK
Verify voltage, in case it drifted a little.
Fifteen minutes down the line, fondle the heat sink underneath the DROK. It should not run hot. On really hot days, play a tiny muffin fan across the DROK.
Remember an INTERMATIC WIND UP TIMER can be used in this circuit. I recommend a 4-hour model. Plenty of amperage reserve capacity.
With the timer, an ammeter, and a verified accurate voltmeter you will have quite the machine. Amperage and voltage will need minor tweaking as the system ages. But you have the ammeter in place. I gave the instructions above for folks who do not have a dedicated ammeter (which is more than handy to have always monitoring).
