Dial-pulse-indicator
This indicator senses the switching on and off of the 48-V DC line voltage and transmits the pulses to logic circuitry. An Hl1A10 threshold coupler, with capacitor filtering, creates a straightforward circuit that can provide dial pulse indication while rejecting high levels of induced 60-Hz noise. The DHD805 offers reverse bias protection for the LED during transient over-voltage situations. The capacitive filtering removes less than 10 ms of the leading edge of a 40-V dial pulse while providing rejection of up to 25-V RMS at 60 Hz.
The circuit operates by detecting the presence or absence of the 48-V DC voltage, which is indicative of the switching actions in the system. The Hl1A10 threshold coupler plays a critical role in this process by ensuring that only significant voltage changes trigger the logic circuitry, thus providing reliable pulse indication. The incorporation of capacitor filtering enhances the circuit's performance by smoothing out voltage spikes and filtering out unwanted noise, particularly at the 60 Hz frequency commonly found in power systems.
The DHD805 component is essential for protecting the LED indicator from potential damage caused by transient over-voltage conditions. This protection mechanism ensures that the LED remains functional even during voltage surges, which can occur in various operational scenarios.
The capacitive filtering is designed to be highly effective, allowing the circuit to preserve the integrity of the dial pulse while simultaneously rejecting noise. By eliminating less than 10 ms of the leading edge of a 40-V dial pulse, the circuit maintains its responsiveness while ensuring that high levels of 60 Hz noise, up to 25-V RMS, do not interfere with the signal transmission.
Overall, this design offers a robust solution for monitoring 48-V DC lines while ensuring reliability and noise immunity, making it suitable for various applications in electronic systems where accurate voltage sensing is critical.This indicator senses the switching on and off of the 48-V de line voltage and transmits the pulses to logic circuitry. An Hl1A10 threshold coupler, with capacitorfiltering, gives a simple circuit which can provide dial pulse indication, and yet reject high levels of induced 60-Hz noise.
The DHD805 provides reverse bias protection for the LED during transient over-voltage situations. The capacitive filtering removes less than 10 ms of the leading edge of a 40-V dial pulse, while providing rejection of up to 25-V rms at 60Hz. 🔗 External reference
The circuit operates by detecting the presence or absence of the 48-V DC voltage, which is indicative of the switching actions in the system. The Hl1A10 threshold coupler plays a critical role in this process by ensuring that only significant voltage changes trigger the logic circuitry, thus providing reliable pulse indication. The incorporation of capacitor filtering enhances the circuit's performance by smoothing out voltage spikes and filtering out unwanted noise, particularly at the 60 Hz frequency commonly found in power systems.
The DHD805 component is essential for protecting the LED indicator from potential damage caused by transient over-voltage conditions. This protection mechanism ensures that the LED remains functional even during voltage surges, which can occur in various operational scenarios.
The capacitive filtering is designed to be highly effective, allowing the circuit to preserve the integrity of the dial pulse while simultaneously rejecting noise. By eliminating less than 10 ms of the leading edge of a 40-V dial pulse, the circuit maintains its responsiveness while ensuring that high levels of 60 Hz noise, up to 25-V RMS, do not interfere with the signal transmission.
Overall, this design offers a robust solution for monitoring 48-V DC lines while ensuring reliability and noise immunity, making it suitable for various applications in electronic systems where accurate voltage sensing is critical.This indicator senses the switching on and off of the 48-V de line voltage and transmits the pulses to logic circuitry. An Hl1A10 threshold coupler, with capacitorfiltering, gives a simple circuit which can provide dial pulse indication, and yet reject high levels of induced 60-Hz noise.
The DHD805 provides reverse bias protection for the LED during transient over-voltage situations. The capacitive filtering removes less than 10 ms of the leading edge of a 40-V dial pulse, while providing rejection of up to 25-V rms at 60Hz. 🔗 External reference