- Published in issue 12/1991 on page 62
Water level control
In some countries, the water supply is irregular at most times: in many other countrie at times of a drought. A means of making this less inconvenient is offered by the circuit described here. It needs two water tanks: one, T2, at ground level or even underground and the other, T1, in the loft or at least considerably higher than the first one. Tank 2 gets filled by a pump from tank 1 to ensure that there is sufficient water pressure.