housing generally between said rear wheels, and said outlet is formed adjacent the rear end of said housing, and further including a second sweep hose connected to said outlet to receive part of the Water therefrom and direct the water as a second jet into the pool.of the diode D3. The emitter of the transistor Q2 is connected to the anode of the diode D2 and the cathode of the diode D4. The junction of the diodes D1 and D2 is connected across a capacitor C1 which produces an output voltage VOUT1. The junction of the diodes D3 and D4 is connected across a capacitor C2 which produces an output voltage VOUT2.
The collectors of the transistors Q1 and Q2 are connected to the input of a current mirror 12 to produce a reference current IREF. The current mirror 12 generates output currents IOUT1 and IOUT2 which are each equal to IREF and are applied to the emitters of the transistors Q1 and Q2 respectively.
The circuit 10 is periodically switched such that the capacitor C1