What is the circuit supposed to do for 9.99V, 10.01V, 11V, etc? Are there restrictions on the components you can use?The criteria is I need to build a DC Voltage tester that test 10,12,14 and 15 v. One LED is to turn on for each voltage tested. So say I'm testing, a green LED would indicate 10v is being tested, a red LED would then turn on when it is 12v(and all other LEDs) would be off.
You are still missing the point.All lights are supposed to remain off. When and only when 10v is tested should one of the LEDs turn on, the next tested voltage would be 12 and at that point the LED indicating 12 volts should come on, the previous LED indicating 10v and ALL other LEDs should remain off. The LEDs are to turn of only at the specific voltages and no other in between values
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