Ramsey Electronics manual AF1 Parts List, Resistors and Potentiometers

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AF1 PARTS LIST

Please check the boxes after the components have been identified, and now is a good time to “sort” the like components into groups or bins (an egg carton does nicely) to avoid using the wrong component during assembly.

RESISTORS AND POTENTIOMETERS

Please note that the kit contains some “special” 1 % tolerance resistors. They can be easily identified by the fact that they contain an extra color band, due to their more specific values. When identifying the resistors, first we’ll sort the “normal” resistors, followed by the closer tolerance parts.

ˆ2 100 ohm resistors [brown-black-brown] (R21, 22)

ˆ3 1K ohm resistors [brown-black-red] (R19, 20, 23)

ˆ5 10K ohm resistors [brown-black-orange] (R10, 11, 15, 16, 17)

ˆ3 47K ohm resistors [yellow-violet-orange] (R1,3,8)

ˆ3 100K ohm resistors [brown-black-yellow] (R5,6,12)

ˆ1 750K ohm resistor [violet-green-yellow] (R2)

ˆ1 49.9K ohm resistor [yellow-white-white-red] (R7)

ˆ1 147K ohm resistor [brown-yellow-violet-orange] (R9)

ˆ1 294K ohm resistor [red-white-yellow-orange] (R4)

ˆ1 10K ohm PC mount potentiometer (R14)

ˆ1 100K ohm PC mount potentiometer (R13)

CAPACITORS

ˆ1 100 pF mica capacitor [marked 100 or 101] (C8)

ˆ2 .001 uF disc capacitor [marked .001 or 102] (C2, 5)

ˆ6 .01 uF disc capacitor [marked .01 or 103 or 10nF] (C10, 12, 14, 15, 16, 17)

ˆ3 .1 uF disc capacitor [marked .1 or 104] (C1, 4, 13)

ˆ5 10 uF electrolytic capacitors (C3, 6, 7, 19, 20)

ˆ3 1000 uF electrolytic capacitors (C9, 11, 18)

SEMICONDUCTORS AND INTEGRATED CIRCUITS

ˆ2 1N4148 diodes [glass case with black band] (D1, 2)

ˆ5 1N4002 diode [epoxy case marked 1N4002] (D3, 5, 6, 7, 8)

ˆ1 Light Emitting Diode [LED] (D4)

ˆ1 7808 voltage regulator [marked 7808] (VR1)

ˆ2 MF8 switched capacitance filter IC [16 pin DIP marked MF8] (U1, 2)

ˆ1 LM380 audio amplifier IC [14 pin DIP marked LM380N] (U3)

AF1 6

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Contents Audio Filter Ramsey Transmitter Kits AF1 CW Audio Filter Introduction Theory of Operation AF1 Parts List Resistors and PotentiometersRamsey Learn-As-You-Build KIT Assembly Now, lets get building AF1 AF1 AF1 Parts Layout Diagram AF1 Setup and Operatiion of the Audio Filter CongratulationsTroubleshooting Instructions ConclusionRamsey Kit Warranty Required Tools Estimated Assembly TimeAF1 CW Audio Filter Additional Suggested Items

AF1 specifications

Ramsey Electronics AF1 is a state-of-the-art audio frequency oscillator, renowned for its versatility and performance in various electronic applications. Designed for hobbyists and professionals alike, the AF1 is an essential tool for anyone working with sound generation, modulation, or detection.

One of the main features of the AF1 is its wide frequency range, spanning from 1 Hz to 100 kHz. This broad coverage enables users to generate tones suitable for a multitude of tasks, from simple audio testing to more complex signal modulation in communication systems. The AF1 provides a stable wave output, which is critical in maintaining audio fidelity and ensuring accurate readings in testing environments.

The AF1 employs advanced technologies to achieve its remarkable performance. One of these is its precision frequency control, which allows users to set the output frequency with accuracy. This is facilitated by the device’s inclusion of a calibrated variable resistor, enabling fine adjustments for precise frequency generation. Additionally, the AF1 features a built-in frequency counter that simplifies the process of monitoring the output frequency, providing users with a valuable tool for troubleshooting and calibration.

Another characteristic that sets the AF1 apart is its dual output channels. This allows for the simultaneous generation of two distinct frequencies, offering greater flexibility in applications requiring complex audio signals or dual-tone generation. The outputs are adjustable in amplitude, which helps users tailor their signals according to specific requirements, whether for testing speakers or experimenting with audio synthesizers.

The AF1 is also designed with ease of use in mind. The interface is intuitive, featuring a straightforward layout of dials and switches that enables quick adjustments and settings. This user-friendly approach is ideal for those who may not have extensive experience with electronic signal generators.

Constructed with high-quality components, the RAMSEY AF1 ensures durability and reliability, making it suitable for both fieldwork and laboratory settings. Its compact design allows for easy transport, fitting seamlessly into any toolkit.

Overall, the Ramsey Electronics AF1 is a powerful audio signal generator equipped with a rich feature set, including extensive frequency range, dual outputs, precision control, and intuitive usability. Whether you are a hobbyist, educator, or professional, the AF1 is a valuable asset for any electronic project involving sound generation.