Intermittent Timing Circuit for Windshield Wipers A car maker needs an RC timing circuit to trigger the windshield wiper relay. The circuit should be driver selectable to trigger at 1, 2, 5, and 10 s 5%. The source circuit is the car voltage of 12 V with a series resistance of 10 V. You must use standard parts (see inside rear cover). You have a single-sided OPAMP available with a VCC of 0Vand +12 V that you can use to trigger the windshield wiper relay. The relay triggers with an input of+12 Vl V. You may assume that the circuit resets after the trigger. You should validate your design using OrCAD.