下面是[红外线水位计电路]的电路图 材料BOM表:
R1 10K 1/4W Resistor R2,R5,R6,R9 1K 1/4W Resistors R3 33R 1/4W Resistor R4,R8 1M 1/4W Resistors R7 10K Trimmer Cermet R10 22K 1/4W Resistor C1,C4 1µF 63V Electrolytic or Polyester Capacitors C2 47pF 63V Ceramic Capacitor C3,C5,C6 100µF 25V Electrolytic Capacitors D1 Infra-red LED D2 Infra-red Photo Diode (see Notes) D3,D4 1N4148 75V 150mA Diode D5 LED (Any color and size) D6,D7 1N4002 100V 1A Diodes Q1 BC327 45V 800mA PNP Transistor IC1 555 Timer IC IC2 LM358 Low Power Dual Op-amp IC3 7812 12V 1A Positive voltage regulator IC RL1 Relay with SPDT 2A @ 220V switch Coil Voltage 12V. Coil resistance 200-300 Ohm J1 Two ways output socket (:电路图) |