A cheap hand blender I got from Walmart broke down after two years of use,
so I crack it open. The circuit is very simple. Just a diode bridge rectifier,
a switch, and a DC motor (circuit schematic in attached image).
The interesting part is, it has two speeds: "high" and "low". The high speed is
just a standard diode bridge. My question is, why does it work at low speed?
I looks to me like driving the motor half of the time and short circuit half of the time.
The diodes are "N5399 MIC" and the motor is "HRS 5512SP".
**broken link removed**
so I crack it open. The circuit is very simple. Just a diode bridge rectifier,
a switch, and a DC motor (circuit schematic in attached image).
The interesting part is, it has two speeds: "high" and "low". The high speed is
just a standard diode bridge. My question is, why does it work at low speed?
I looks to me like driving the motor half of the time and short circuit half of the time.
The diodes are "N5399 MIC" and the motor is "HRS 5512SP".
**broken link removed**