Answer Happy

The object of this project is to design and build a device that measures capacitance and displays the value on a digital multi-meter. Most multi-meters have a 200 mV de full scale range which could be used to measure capacitors of say 200 pF to 2 uF in five decade ranges Specification Range Accuracy Output Power supply 1 pF to 2uF Better than 2% above 100 pF 200 mV Full scale range into greater than I Mega ohm. Single 9 volt battery Table 1. Required specifications for the Capacitance Meter Suggested Design A proposed circuit is shown in Fig. 6. You should recognise partſ of this from your previous work. The essence of the measuring circuit is shown in Fig. 4. 2 DI u. 2 utv vor Fig. 4 You should be able to show that: GR V de у =ск, ev dt VEVER, JOR GR Therefore if