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Posts tagged high quality walkie talkie

High Quality Walkie Talkie – Radiocomunicación

High Quality Walkie Talkie Circuit module The second circuit diagram is a simple way to make a walkie talkie. Walkie talkie principle is to use two pairs of radio transmitter and receiver are combined together to form a walkie talkie. That each contains one receiver and one transmitter device. but only just transmitter circuit course […]

Light sensor circuit diagrams

Light sensor circuit diagrams Light sensor circuit diagrams This circuit has two distinct functions, either using the same light sensor, a circuit module is useful for light and turn off the lights (relay), and that only produce sound. Usually applies to a security alarm place. Components used: Sensor LDR 2N3904 Relay Audio alarm using LM386

Microphone Preamplifier Circuit

Microphone Preamplifier Circuit Microphone Preamplifier Circuit using Transistors Tr BC109 Microphone Preamplifier Circuit using BC549C, BC547B

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