HAN1B9
Microphone input
A microphone indication identifies an acoustic-input transducer in a communications circuit.
IEC
IEEE / ANSI · HAN1B9
ANSI/IEEE Microphone input form
IEEE-library form of microphone input: a microphone indication identifies an acoustic-input transducer in a communications circuit.
In plain English
What does ANSI/IEEE Microphone input form mean?
This reference locates microphone input in Autodesk's IEEE-oriented annunciations family. A microphone indication identifies an acoustic-input device that turns a measured quantity into a signal in a communications circuit. The public library uses HAN1B9 for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.
A simple example
Use the surrounding circuit labels and the project legend to identify the intended operating condition and connection. Carry the same device reference into the schedule or equipment document so the symbol can be reconciled with its real terminals, function and operating limits.
What the drawings help you do
Reference the signal input, supply or bias arrangement where relevant. A microphone converts sound into a signal; a loudspeaker performs the opposite role. Reference the signal input, supply or bias arrangement where relevant. A microphone converts sound into a signal; a loudspeaker performs the opposite role. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted.
This particular reference
IEEE-library form of microphone input: a microphone indication identifies an acoustic-input device that turns a measured quantity into a signal in a communications circuit. A microphone converts sound into a signal; a loudspeaker performs the opposite role.
- Terminal
- An identified point where a conductor connects.
- Signal
- Electrical information passed between devices, rather than necessarily the main power supply.
- Rating
- A value stating the conditions for which equipment is specified.
Read the source: Autodesk IEEE Symbol Preview: Annunciations
IEEE / ANSI · Microphone
Autodesk IEEE Symbol Preview: Annunciations, block HAN1B9. Matching functional counterpart linked separately. Independently drawn educational geometry; not a certified IEEE glyph or database identifier.
Shown as an independently authored educational illustration. Use the cited publication and drawing legend to verify the required drafting form.
Schematic · HAN1B9
What it represents
This reference locates microphone input in Autodesk's IEEE-oriented annunciations family. A microphone indication identifies an acoustic-input transducer in a communications circuit. The public library uses HAN1B9 for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.
Use the surrounding circuit labels and the project legend to identify the intended operating condition and connection. Carry the same device reference into the schedule or equipment document so the symbol can be reconciled with its real terminals, function and operating limits.
Reference the signal input, supply or bias arrangement where relevant. A microphone converts sound into a signal; a loudspeaker performs the opposite role. Reference the signal input, supply or bias arrangement where relevant. A microphone converts sound into a signal; a loudspeaker performs the opposite role. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted.
How to read it
- Reference the signal input, supply or bias arrangement where relevant.
- A microphone converts sound into a signal; a loudspeaker performs the opposite role.
Information to show or reference
- Identify the associated device, circuit or diagram boundary.
- Reference the signal input, supply or bias arrangement where relevant.
- Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form.
A distinction that matters
A microphone converts sound into a signal; a loudspeaker performs the opposite role.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
Autodesk IEEE Symbol Preview: Annunciations
Public IEEE-oriented Annunciations table explicitly lists HAN1B9 as Microphone. This supports the vendor convention context, not reproduction of the publisher graphic.
About this graphic
This illustration was authored independently by Elora Grid to explain the concept. It is not reproduced from a customer drawing, an official standard graphic or a manufacturer CAD file. Its correspondence to an exact IEC or IEEE symbol identifier has not been certified.
SVG and DXF downloads contain this original artwork. DXF uses unscaled drawing units; a GA envelope supplies no product dimensions, clearances or fabrication information. Original artwork is available under CC BY 4.0. Third-party references retain their own terms.
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