The following circuit diagram is designed to be used as an amplifier (including loudspeaker, batteries, input and output jacks) which is fitted into a packet of cigarettes or Fuzz-box. This amplifier consists of following parts: resistor, electrolytic capacitor, polyester ceramic capacitor, electrolytic capacitor, audio power amplifier IC, stereo jack sockets (switch), loudspeaker, PP3 battery or AAA battery.
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Circuit Diagram for Car Alarm and Immobilizer System by Ron J
The following circuit diagram apply for Car Alarm and Immobilizer System. This circuit features exit and entry delays, an intermittent siren output and automatic reset, an instant alarm zone. You can immobilize the vehicle and flash the lights just by adding an external relays. The circuit uses a Cmos 4011. It has four two-input NAND gates. These gates only have a low output when both inputs are high. While at least one input is low – the output pin will remain high. The electronic components used include resistor, transistor, diodes, CMOS IC, zener, capacitor, 25 watt electrolytic and a relay.
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