TV_CONTROL_RECEIVER
#ultrasonic
#transducer
#discriminator
#tuning-motor relay
#remote control
#audio control
#video control
#frequency shift
#barium titanate
#coil tuning
Description: 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,..
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,..
Detected distance with ultrasonic receiver circuit diagram
The circuit operates at a voltage of 9V with a current consumption of only 5mA. It allows for frequency adjustment within the range of 150 to 180 kHz, featuring a bandwidth of approximately 20 kHz. This configuration ensures that only...
Electronic mosquito repeller
The circuit diagram of an ultrasonic mosquito repeller is based on the principle that insects, such as mosquitoes, can be repelled using sound frequencies in the ultrasonic range (above 20 kHz). The circuit utilizes a CMOS 4047 PLL IC configured...
Packard Bell Remote Control
When a key is pressed, the remote control transmits a preamble followed by 32 bits of information encoded using specific pulse timings. The pulse examples can be observed in logic analyzer screen captures, although some glitches are present due to...
Ultrasonic Sensor Switch
This is an ultrasonic motion detector circuit with high movement sensitivity. It can detect even minor air movements, such as hot air rising or wind blowing, when the trimpot is adjusted to a sensitive position. The transmitter emits a steady...
Ultrasonic Radar AlarmCircuit Project
The circuit consists of an ultrasonic transmitter and a receiver that operate at the same frequency. Ultrasonic piezoelectric transducers serve as the output and input devices, respectively, with their frequency of operation determined by the specific devices used. The transmitter...
door opener science project
This button, with some modifications, allows the opening of an office door using Nexus One, iPhone, or SMS. Positioned near the reception desk, this button activates an electronic latch on the front door. Upon removing the assembly from the wall,...
R-40-16 ultrasonic receiver circuit
The circuit consists of transistors VT1 through VT7 and other components. Due to the weak signal received from the transmitter, the circuit employs a multi-stage amplifier to enhance the output. This output generates a square wave pulse signal to control...
Making a Remote Controlled Car using Sun SPOT
A remote Sun SPOT will transmit data to a Sun SPOT mounted on a car, which will control an integrated circuit (IC) according to the digital input/output pins D0 to D3. The IC will subsequently drive the motors that propel...
ultrasonic dog whistle
It is well known that many animals are particularly sensitive to high-frequency sounds that humans cannot hear. Many commercial pest repellers based on this principle are available, most of them operating in the range of 30 to 50 kHz. The...