TV_CONTROL_RECEIVER
Utilizes a barium titanate transducer as a microphone, tuned with a 20 mH coil to generate peaks at control frequencies of 38.5 kHz and 41.5 kHz. A balanced discriminator detects the two ultrasonic tones. A frequency shift in the continuous ultrasonic tone activates a tuning-motor relay. Both audio and video signals are disabled during the tuning process. Additionally, it offers remote on/off control of power.
The circuit employs a barium titanate transducer, known for its piezoelectric properties, which convert acoustic energy into electrical signals. This transducer is paired with a 20 mH coil, forming a resonant circuit that enhances sensitivity at specific frequencies. The tuning is critical for ensuring optimal performance at the designated control frequencies of 38.5 kHz and 41.5 kHz, which are situated within the ultrasonic range.
The balanced discriminator is a vital component that processes the output from the transducer. It effectively identifies and differentiates between the two ultrasonic frequencies, allowing for precise detection of the signals. This detection mechanism is crucial for applications requiring accurate frequency discrimination, such as in remote control systems or ultrasonic communication.
When a frequency shift occurs in the continuous ultrasonic tone, it triggers a tuning-motor relay. This relay is responsible for adjusting the tuning of the system to maintain resonance with the incoming signal, ensuring that the circuit remains responsive to changes in frequency. During this tuning phase, both audio and video signals are muted to prevent interference and ensure a clean tuning process.
Furthermore, the circuit is designed to facilitate remote on/off control of power, enhancing its usability in various applications. This feature allows for convenient operation without the need for physical interaction with the device, making it suitable for remote monitoring and control scenarios.
Overall, the described circuit is a sophisticated system that integrates advanced components and technologies to achieve reliable ultrasonic detection and control, making it applicable in fields such as telecommunications, automation, and audio processing.Uses barium titanate transducer as microphone, tuned with 20-mh coil to provide peaks at control frequencies of 38.5 and 41.5 kc. Balanced discriminator detects the two ultrasonic tones. Frequency shift of continuous ultrasonic tone activates tuning-motor relay. Both audio and video are killed during tuning. Also provides remote on. off control of power.-N,.. 🔗 External reference
The circuit employs a barium titanate transducer, known for its piezoelectric properties, which convert acoustic energy into electrical signals. This transducer is paired with a 20 mH coil, forming a resonant circuit that enhances sensitivity at specific frequencies. The tuning is critical for ensuring optimal performance at the designated control frequencies of 38.5 kHz and 41.5 kHz, which are situated within the ultrasonic range.
The balanced discriminator is a vital component that processes the output from the transducer. It effectively identifies and differentiates between the two ultrasonic frequencies, allowing for precise detection of the signals. This detection mechanism is crucial for applications requiring accurate frequency discrimination, such as in remote control systems or ultrasonic communication.
When a frequency shift occurs in the continuous ultrasonic tone, it triggers a tuning-motor relay. This relay is responsible for adjusting the tuning of the system to maintain resonance with the incoming signal, ensuring that the circuit remains responsive to changes in frequency. During this tuning phase, both audio and video signals are muted to prevent interference and ensure a clean tuning process.
Furthermore, the circuit is designed to facilitate remote on/off control of power, enhancing its usability in various applications. This feature allows for convenient operation without the need for physical interaction with the device, making it suitable for remote monitoring and control scenarios.
Overall, the described circuit is a sophisticated system that integrates advanced components and technologies to achieve reliable ultrasonic detection and control, making it applicable in fields such as telecommunications, automation, and audio processing.Uses barium titanate transducer as microphone, tuned with 20-mh coil to provide peaks at control frequencies of 38.5 and 41.5 kc. Balanced discriminator detects the two ultrasonic tones. Frequency shift of continuous ultrasonic tone activates tuning-motor relay. Both audio and video are killed during tuning. Also provides remote on. off control of power.-N,.. 🔗 External reference