초록 ▼

A control circuit for use with a spa system includes a pressure sensor which generates a signal representative of the pressure in the system. A microcontroller is coupled to receive the signal from the sensor and is configured to store a first pressure level. The microprocessor compares the first pr

A control circuit for use with a spa system includes a pressure sensor which generates a signal representative of the pressure in the system. A microcontroller is coupled to receive the signal from the sensor and is configured to store a first pressure level. The microprocessor compares the first pressure level with the subsequently measured pressure level and generates a control signal if the comparison indicates a change in pressure which exceeds a predetermined amount. An electronically controlled switch is coupled to receive the control signal from the microcontroller and turn electrical power to the pump off in response thereto.

대표청구항 ▼

[ What is claimed is:] [1.]1. A spa control circuit for use with a spa system having a pump for circulating water through the spa system, the circuit comprising:at least one pressure sensor capable of producing a signal representative of changes in pressure in the spa system;a microcontroller couple

[ What is claimed is:] [1.]1. A spa control circuit for use with a spa system having a pump for circulating water through the spa system, the circuit comprising:at least one pressure sensor capable of producing a signal representative of changes in pressure in the spa system;a microcontroller coupled to receive the signal from the pressure sensor, programmed to store a first pressure, compare the first pressure with a subsequent pressure and generate a control signal when the comparison indicates a change in pressure which exceeds a predetermined amount;an electrically controlled switch coupled to receive the control signal from the microcontroller and capable of controlling application of electrical power to the pump in response to the control signal.