Electronics Circuit Refrigerator Door Alarm Parts: R1______________10K 1/4W Resistor R2_____________Photo resistor (any type) R3_______________2M2 1/4W Resistor R4_______________1M 1/4W Resistor C1______________10µF 25V Electrolytic Capacitor C2_____________100nF 63V Polyester Capacitor D1____________1N4148 75V 150mA Diode IC1,IC2_________7555 or TS555CN CMos Timer ICs BZ1___________Piezo sounder B1____________3V Battery
Posts tagged Door
The design and simulation of the impedance match between the MAX2338 mixer stage and a 183.6MHz SAW filter in a CDMA application. The SAW filter S-parameter is used to simulate the interface with the mixer. A worked example is provided with a SAWTEK 855893 SAW filter. An optimum impedance matching circuit between the MAX2338 mixer […]
SorrY asked: just by looking at an object and querying a database it produces a list of attributes of that object in your “inside window” of the eye – that is an artificial eye transplant that associates existing attributes with defined custom attributes that you can add and delete over time – for example if […]
500mW PLL FM transmitter 88-108MHz This PLL transmitter is controlled and the frequency is very stable and can be programmed digitally. Transmitter will work 88-108 MHz and output power up to 500mW. With a small change can set the frequency of 50-150 MHz. The output power is often set to several watts with transistors. So […]
TDA1521A stereo audio amplifier circuit TDA1521A stereo audio amplifier circuit which will deliver 15W audio power output on each channel. TDA1521A stereo audio amplifier circuit is a dual hi-fi audio power amplifier encapsulated.