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MD-1MIC TO LINE DRIVER / HEADPHONE MONITOR

The Whirlwind MD-1 is the culmination of many years of joint product development between our engineers and suggestions from professionals such as you. This compact portable unit combines a high quality microphone preamp- line driver with a headphone amplifier designed to monitor the mic preamp or be used independently. The MD-1 employs two 9-Volt batteries and provides enough gain to drive both headphones and long signal lines and allow for maximum headroom in the mic preamp.

FEATURES

Up to 66 dBm of gain adjustable with analog style potentiometer.

Finest quality mu metal shielded input transformer.

Wide range frequency response.

Low input noise and harmonic distortion.

Low susceptibility to radio frequency interference.

Balanced, transformer isolated input and output connections.

Headphone section monitors main input, separate balanced headphone line input or mix of both.

Rugged construction.

9 Volt battery power with reasonable battery life.

CIRCUIT DESCRIPTION

The input is a via a female XLR connector with a switch for mic or line level mode. In MIC mode, a mu metal shielded input transformer provides 20dBm of impedance gain with low THD. The MD-1 provides 18VDC phantom power when the MIC/LINE switch is in the MIC mode and the phantom power switch is on. In LINE mode, the audio signal bypasses the transformer and is presented to a standard active balanced input configuration. After the input section, the signal is routed to the active gain circuit.

The active gain section uses a low noise IC to produce up to 26dBm of forward gain. The GAIN control provides both attenuation and gain to the user. With the gain control fully CCW, the circuit provides 50dBm of attenuation (line input mode). With the gain control fully CW (mic mode) the unit will provide 66dB of forward gain from input to output (18dB from the input section, 28dB from the active section and 20dB from the output transformer). After the active gain section, the signal is sent to both the output driver and the headphone amplifier. In the output driver circuit, the signal passes through an IC that buffers the signal, drives the output transformer (which adds 20dBm of impedance gain), provides isolation and helps to maintain maximum common mode rejection. The transformer output is connected to the DRIVER side of the output selector switch. In the

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Whirlwind MD-1 manual Features, Circuit Description

MD-1 specifications

The Whirlwind MD-1 is an innovative and versatile multi-copter drone designed to serve various applications across industries. Its advanced features combine cutting-edge technology and robust engineering, making it a preferred choice for both professional and recreational users.

One of the most prominent features of the Whirlwind MD-1 is its exceptional flight stability, which is achieved through an advanced flight control system. This system utilizes a combination of GPS and inertial navigation, allowing the drone to maintain a precise position even in challenging outdoor environments. This stability is particularly beneficial for aerial photography and surveying, where steady footage or images are crucial.

The MD-1 is equipped with a powerful propulsion system that includes high-efficiency brushless motors. These motors provide remarkable thrust, enabling the drone to carry a payload of up to 5 kilograms, making it suitable for tasks such as cargo transport or carrying specialized equipment for inspections. The drone’s maximum flight time of around 40 minutes is impressive for its class, allowing it to cover vast areas without frequent recharging.

Another key characteristic of the Whirlwind MD-1 is its rugged design. Built with durable materials, it can withstand various environmental conditions, from high winds to light rain. This robustness enhances its practicality in real-world applications, including agricultural monitoring, search and rescue operations, and infrastructure inspections.

The MD-1 features an array of smart technologies, including automated flight modes and obstacle avoidance systems. Pilots can select from various flight modes, such as follow-me, waypoint navigation, and circular flight, making the drone user-friendly even for those with minimal experience. The built-in obstacle avoidance sensors enhance safety during operations, ensuring the drone can navigate around obstacles autonomously.

Moreover, the Whirlwind MD-1 boasts an advanced camera system that can capture 4K video footage and high-resolution images, allowing for detailed inspections and assessments. The camera can be controlled remotely, enabling operators to adjust settings on-the-fly for optimal results.

In summary, the Whirlwind MD-1 encompasses a blend of advanced technologies, impressive payload capacity, and reliable performance. Its combination of stability, autonomy, and durability makes it a standout choice in the ever-evolving drone landscape, meeting the needs of various sectors effectively. Whether used for recreational flying or professional applications, the MD-1 is engineered for success in the skies.