Multi SSG Motors In Series

Much more info below –

PC fans usually use between 130mA and 180mA.
This idea, was to see if a similar amperage could be used, but more air be moved or if more use could be made of those mA.
The drive battery is charged during the day with a homemade solar panel, several salvaged Li-Ion packs can be charged up normally per day (voltages 12.4V to 14.4V). Another similar small panel drives the workbench SSG type fan. At night, the charged battery takes over. On cloudy but humid days, I put one of the previously charged batteries on the workbench fan.

If the strongest SSG is first in line, it can output to a smaller fan with hardly any rotation speed loss. In such a way, 3 motors are shown, still using the same input amperage…the output doesn’t draw extra from the input, being the collapsing field energy of the powered coils. Several fans can therefore be connected for the same input amperage as the first one uses. The ‘trick’ is that they should decrease in normal power draw, then their pots can be turned such that they run one from the next.

‘Spiker’ is the first SSG motor, a 120mm PC fan with no blades.
A white LED (Sharpied blue) is across the Base and Emitter, rather than a neon.
Transistor – D2641
Resistor – 150ohm
Variable pot – 5K
Output diode – HEP 154

The output of ‘Spiker’ goes to a 2200uF capacitor and then to the next motor.
That motor is a regular sized PC fan, normally drawing 140mA.
Transistor – C5763
Neon for protection
Resistor – 100ohm
Variable pot – 10K

The output of that one goes to the input of the third, a smaller sized PC fan, normally using 120mA through another 2200uF capacitor.
Transistor – C5763
Resistor – 100ohm
Variable pot – 5K
Output diode – 1N4005

The little one uses a small PC fan of unknown usual running amperage.
Transistor – C2810
Green LED across Base and Emitter
No protection neon or output at the moment, just a wind source 🙂

All components are salvaged, mostly from PC power supplies, CRT monitor motherboards and inside old PC cases.

See this series of videos, for the Imhotep SSG circuit and ‘how to’:

You may also like...