BIKE SPEEDOMETER CIRCUIT
The proximity detector operates on the principle of sensing the presence of objects within a specified range. It is typically implemented using infrared or ultrasonic sensors, which can detect the passing of PC board pieces as they move past the sensor’s field of view. The output from the detector is a digital signal that toggles between high and low voltage levels, ensuring that it can be easily interfaced with digital counting or processing circuits. This clean transition is critical for minimizing errors in the counting process, as it reduces the likelihood of false triggers.
The subsequent component, the frequency-to-voltage converter, is essential for applications requiring the conversion of frequency signals into corresponding voltage levels. The LM2917N-8 is a popular choice for this task due to its ability to provide a high degree of accuracy and stability. It converts the frequency of the input signal, which is derived from the proximity detector's output, into a proportional voltage level. This voltage can then be used in various applications, such as analog displays or further processing in microcontroller-based systems.
In a typical application circuit, the output from the proximity detector is connected to the input of the LM2917N-8. The converter's output voltage will vary linearly with the frequency of the incoming signal, allowing for precise measurement and monitoring of the passing PC board pieces. Additional components, such as capacitors and resistors, may be included in the circuit to filter noise and stabilize the output voltage, ensuring reliable operation in dynamic environments.
Overall, this combination of a proximity detector and a frequency-to-voltage converter creates a robust system for counting and processing applications, providing accurate and reliable output signals suitable for a wide range of electronic projects.The proximity detector senses the passing of the PC board pieces as the wheel rotates, providing an output signal, which has a clean transition between high and low voltage levels, and is ideal for triggering counting or processing circuits. Next is the frequency-to-voltage converter, and, because a reasonable degree of accuracy is required, the LM2917N-8..
🔗 External reference
Related Circuits
The circuit includes a controller that integrates an acoustic-electric conversion and amplification circuit, a clock pulse generator, a counting circuit, and a control circuit. It manages four accompanying music tracks and flashing lights. Microphones (MIC) convert sound into electrical...
This is a simple yet effective darkness activator. It uses a light-dependent resistor (LDR) to detect light, and when no light is present, it activates an alarm from an 8-ohm speaker. The circuit can be easily modified to function...
This circuit was designed in response to a request for a 1 kHz infrared (IR) transmitter circuit suitable for remote control applications. It is intended to serve as a low-power IR transmitter with an operating frequency of 1 kHz,...
What is a circuit breaker? When is an AC power line filter or a phone line filter necessary? How can a noise filter be designed? Is it possible to create a homemade surge protector? The following circuit protection options...
A simple battery charger circuit with reverse polarity indication is presented. The circuit utilizes the L200 integrated circuit, which is a five-pin variable voltage regulator. It can be powered by DC voltage from either a bridge rectifier or a...
The circuit for the bridge excitation voltage XTR108 is linearized using adjusted algorithms that correspond to the linearization of the RTD response. The excitation voltage VEX is defined as 2IREFR1, where VEX represents the excitation voltage applied at both...