| 摘要 |
Provision is made of a detector circuit for displaying the battery voltage in an electronic timer which consists of the following components: a first stage having a FET MOS (2) of enriched type and a resistor (4). The operating voltage or the voltage divided by a further resistor is applied at the control electrode and at the source of the FET MOS in the forward direction. A load resistor (4) is connected to the sink of the FET MOS. A second stage having a FET MOS inverter (5) of enriched type is provided, the input of which is connected to the sink of the FET MOS and to the load resistor (4) of the first stage. The voltage source of the battery voltage detector circuit is the battery whose voltage is displayed. <IMAGE> |
