I'm currently doing a hobby project regarding a wood cutting saw. To do so, I have bought a DC motor from a local seller. The seller provides this information only:
- Voltage: 12-36V
- Max Rpm: 15000
- No load current with 12V: 1A
- No load current with 24V: 1.5A
As a matter of fact, no rated/nominal voltage, current, and power values are available. However, once I researched on the web I found these:
- Brand: Mabuchi
- Model: RS-775SF
- Power: 230W
Then, I bought a 12V/30A power supply (AC-DC transformer mostly used with LED strings) assuming that it could drive my motor up to 30A once I forced it (apply high load by holding the shaft with gloves ). Unfortunatelly it did not, it gives max 4.5A only.
I'm new on electronics and confused very much. I have a lot to ask but the main things are:
- First of all, is there any environment on the web to find the offical specifications of DC motors?
- What is wrong with my 12V 30A power supply? Isn't it supposed to give much more than 4.5A if loaded?
- Which power supply (or any configuration) should I use to drive my DC motor optimally if my design criteria is such: around 10000 rpm with 150W cutting power (1.45 kg*cm torque)?