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This is a simple circuit designed to detect electromagnetic radiation, including hidden wiring. It utilizes a 1mH inductor to sense the electric field. The induced voltage from the inductor is amplified by an operational amplifier (op-amp). An audio headset...
The circuit is better referred to as the Evaluation Board for the AT89C2051 and AT89C4051 microcontrollers. This Minimum System Evaluation Board for the AT89C2051 and AT89C4051 offers several advantages in terms of hardware support. The Evaluation Board for the AT89C2051...
Long-distance infrared transmitter circuit diagram. This simple circuit offers a considerable range by utilizing three infrared transmitting LEDs (IR1 through IR3) in series to enhance the radiated power. To further improve directivity and power density, the IR LEDs can...
The complete electrical circuit diagram of a line follower robot is based on the ATmega16 microcontroller. This robot consists of three primary modules: the sensor module, the microcontroller module, and the DC motor module. A comprehensive tutorial, including circuit...
The circuit includes a momentary switch S1 that triggers an alarm pulse for the decade counter IC2, which increments its count with each alternating alarm pulse or the activation of switch S1. Ten variable resistors (VR1 through VR10) are...
The operational amplifier A is utilized in an audio preamplifier circuit. Its advantages include compact size, low noise, low power consumption, and excellent consistency. The operational amplifier can achieve significant negative feedback while increasing output without distortion. The signal...