| 摘要 |
A circuit (10) for producing signals representative of at least two flame current levels is disclosed herein. The circuit (10) includes two electrodes (12, 14) locatable in a flame (16), where a voltage potential is set up between the electrodes (12, 14), and the current flow is measured therebetween (flame current). The circuit (10) includes an amplifying portion (24, 42) for amplifying the flame current and applying a signal to a microprocessor (38). The microprocessor (38) samples the signal and outputs a signal representative of the flame current level. <IMAGE> |
