下面是[冰箱门报警电路]的电路图 材料BOM表:
R1 10K 1/4W Resistor R2 Photo resistor (any type) R3,R4 100K 1/4W Resistors C1 10nF 63V Polyester Capacitor C2 100µF 25V Electrolytic Capacitor D1,D2 1N4148 75V 150mA Diodes IC1 4060 14 stage ripple counter and oscillator IC Q1 BC337 45V 800mA NPN Transistor BZ1 Piezo sounder (incorporating 3KHz oscillator) SW1 Miniature SPST slide Switch B1 3V Battery (2 AA 1.5V Cells in series) (:电路图) |