Control arrangement for thermoelectric apparatus

Claim 1

A THERMOELECTRIC HEAT PUMP UTILIZING THE PELTIER EFFECT FOR HEATING OR COOLING A SPACE COMPRISING A THERMOPILE HAVING ONE SIDE ADAPTED TO ABSORB HEAT FROM OR DISSIPATE HEAT INTO SAID SPACE AND ANOTHER SIDE ADAPTED TO DISSIPATE HEAT INTO OR ABSORB HEAT FROM AN AMBIENT SEPARATED FROM SAID SPACE WHEN A DIRECT CURRENT IS PASSED THROUGH SAID THERMOPILE, A RECTIFIER FOR CONVERTING ALTERNATING CURRENT FROM A SOURCE OF A.C. POWER TO DIRECT CURRENT AND INCLUDING OUTPUT TERMINALS ADAPTED TO BE CONNECTED ACROSS SAID THERMOPILE TO SUPPLY A DIRECT CURRENT THERETO, SAID RECTIFIER INCLUDING A HALF-WAVE RECTIFICATION CIRCUIT AND A FULL-WAVE RECTIFICATION CIRCUIT, SWITCH MEANS MOVABLE BETWEEN AT LEAST TWO POSITIONS FOR CONNECTING SAID HALF-WAVE RECTIFICATION CIRCUIT TO SAID SOURCE OF A.C. POWER WHEN SAID SWITCH IS IN ONE POSITION AND FOR CONNECTING SAID FULL-WAVE RECTIFICATION CIRCUIT TO SAID SOURCE OF A.C. POWER WHEN SAID SWITCH IS IN ANOTHER OF SAID POSITIONS, AND MEANS RESPONSIVE TO THE TEMPERATURE OF SAID SPACE FOR SEQUENTIALLY ACTUATING SAID SWITCH MEANS TO ENERGIZE SAID RECTIFICATION CIRCUITS ACCORDING TO PREDETERMINED TEMPERATURE CHANGES IN SAID SPACE.