Electronic room temp. controller relay control transistor - has control voltage influenced by capacitor voltage to give rapid response to temp. variations

摘要

The electronic temp. controller has a temp. dependent resistance actual temp. detector, a desired temp. adjuster and a transistor (6) controlled according to the actual-desired temp. difference in series with the control winding of a relay with a contact in a heating current circuit. A capacitor (11) is charged and discharged according to the transistor state. The transistor controlling voltage is influenced by the capacitor voltage so as to change the transistor's switching state. USE/ADVANTAGE - Temp. controller is improved to have very rapid response to temp. variations and to operate very accurately.