High speed warning device
The circuit consists of several key components that work together to monitor and regulate engine speed. The first component, A1, functions as an amplifier and regulator, enhancing the signal received from the spark coil. This is crucial for ensuring that the subsequent components receive a stable and strong signal, which is necessary for accurate processing.
Following A1, A2 operates as a frequency-to-voltage converter. It takes the frequency signal derived from the engine's RPM and converts it into a corresponding voltage level. This output voltage is directly proportional to the engine's RPM, allowing for easy measurement and comparison in the next stage of the circuit.
A3 serves as a comparator. It compares the voltage output from A2 with a predetermined reference voltage. When the engine RPM reaches a specific threshold, A3 activates an output transistor. This action can trigger various responses in the system, such as activating a warning light or engaging a control mechanism, depending on the overall design of the circuit.
Additionally, A4 is employed to generate an audible tone when the engine exceeds the set speed. This amplifier is designed to produce a sound signal that alerts the operator of the engine's over-speed condition, enhancing safety and operational awareness.
Overall, the described circuit provides a comprehensive solution for monitoring engine RPM, ensuring that the engine operates within safe limits while providing audible alerts for over-speed conditions. Each component plays a vital role in the system, contributing to its overall functionality and reliability.A1 amplifies and regulates the signal from the spark coil. A2 converts frequency to voltage so that its output is a voltage proportional to engine rpm. A3 compares the tachometer voltage with the reference voltage and turns on the output transistor at the set speed Amplifier A4 is used to generate an audible tone whenever the set speed is exceeded. 🔗 External reference
Related Circuits
This is a simple high-voltage inverter circuit. It uses an NPN transistor type 2N3055. This circuit is designed to invert low voltage to high voltage. The high-voltage inverter circuit utilizing the 2N3055 NPN transistor serves as an effective means to...
A function generator that operates within a frequency range of 0.1 Hz to 20 MHz can be constructed using the MAX038 integrated circuit chip. This represents a straightforward implementation of a high-performance signal generator. The MAX038 is a high-speed precision...
This audio power amplifier is highly suitable for portable devices or as a headphone amplifier. The circuit design of this audio power amplifier is straightforward. This audio power amplifier circuit is designed to enhance audio signals for portable devices and...
The fan operates continuously in many PCs, which may not always be necessary. A straightforward controller circuit can adjust the fan speed based on demand. This not... A fan speed controller circuit can significantly enhance the efficiency of cooling systems...
The circuit depicted in Figure 3-7 utilizes a touch sensor chip in conjunction with a conductive sheet. It is designed to achieve eight different speed settings. The CC4011 timing pulse oscillator is comprised of an integrated circuit. The configuration...
MC44BS374CA: PLL Tuned UHF and VHF Audio Video High Integration Modulator MC44BS374CA The MC44BS374CA Audio and Video Modulator is for use in VCRs, set-top boxes, and similar devices. By Freescale Semiconductor, Inc The MC44BS374CA is a highly integrated audio and...