下面是[水位计原理图]的电路图 材料BOM表:
R1 = 15K 1/4W Resistors R2 = 15K 1/4W Resistors R3 = 1K 1/4W Resistors R4 = 1K 1/4W Resistors R5 = 100R 1/4W Resistor R6 = 47K 1/4W Resistor R7 = 3.3K 1/4W Resistors R8 = 3.3K 1/4W Resistors R9 = 2.7K 1/4W Resistors R10 = 15K 1/4W Resistors R12 = 15K 1/4W Resistors R13 = 3.3K 1/4W Resistors R14 = 2.7K 1/4W Resistors R15 = 2.7K 1/4W Resistors D1 = 3mm Green LED D2 = 3mm Yellow LED D3 = 3mm Red LED C1 = 470nF 63V Polyester or Ceramic Capacitor J1 = Two ways output sockets J2 = Two ways output sockets P1 = SPST pushbutton B1 = 9V PP3 Battery Q1 = BC547 45V 100mA NPN Transistor IC1 = 4012 Dual 4 input NAND gate IC IC2 = LM393 Dual Comparator IC Two steel rods of appropriate length (:电路图) |