Excellent video as always. I actually developed a classification scheme for mechanical signals, which is fairly in-depth. Solenoid-Driven: Bell - Hammer strikes a thick metal plate. Single-stroke or vibrating. (Examples: Simplex 4080, Edwards Adaptabel, Wheelock 46T) Chime Bar - Hammer strikes a rectangular bar. Single-stroke or vibrating. (Examples: Autocall Executive, Simplex 2902-9234, Edwards 339, mechanical doorbells) Reed Buzzer - Metal reed rapidly taps directly against electromagnet contact. (Examples: Faraday 7410, Edwards Dixie Buzzer, most dryer buzzers) Flat Buzzer - Hammer rapidly strikes a thin metal diaphragm. (Examples: Simplex 2901-9838, Wheelock 34T and 31T, Federal Vibratone 450) Hi-Hat Buzzer - Cymbal-like diaphragm rapidly oscillates against metal plate. Generates residual wind. (Examples: Edwards Adaptahorn, Federal Vibratone 350, most vehicle horns) Resonating Horn - Airtight diaphragm forces air through extremely narrow space. (Examples: Federal 53, 55, and some types of locomotive horn) Motor-Driven: Motor Bell - Rotating motor drives bell striker. Vibrating only. (Examples: Amseco MBA, Wheelock MB, System Sensor SSM) Motor Horn (Klaxon) - Rotating motor drives toothed cogwheel against metal diaphragm. (Examples: Amseco BZ-54VT, submarine diving horns) Motor Siren - Rapidly spinning blade forces air through small side ports. (Examples: Federal Signal Models A and B9, Master Blaster, civil defense sirens)
Interesting. I suspect many old smoke alarm horns, like the Kobishi CLB-27 are of the “high hat” type. Looking into the horn aperture, you can see that it’s a circular metal plate held with a pin in the center, like a cymbal.
@@willbill808 Neat! I never really gave much thought to the miniature ones. Also, apparently the hi-hat type is also called a "disc horn" in the automotive industry.
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Excellent video as always. I actually developed a classification scheme for mechanical signals, which is fairly in-depth.
Solenoid-Driven:
Bell - Hammer strikes a thick metal plate. Single-stroke or vibrating.
(Examples: Simplex 4080, Edwards Adaptabel, Wheelock 46T)
Chime Bar - Hammer strikes a rectangular bar. Single-stroke or vibrating.
(Examples: Autocall Executive, Simplex 2902-9234, Edwards 339, mechanical doorbells)
Reed Buzzer - Metal reed rapidly taps directly against electromagnet contact.
(Examples: Faraday 7410, Edwards Dixie Buzzer, most dryer buzzers)
Flat Buzzer - Hammer rapidly strikes a thin metal diaphragm.
(Examples: Simplex 2901-9838, Wheelock 34T and 31T, Federal Vibratone 450)
Hi-Hat Buzzer - Cymbal-like diaphragm rapidly oscillates against metal plate. Generates residual wind.
(Examples: Edwards Adaptahorn, Federal Vibratone 350, most vehicle horns)
Resonating Horn - Airtight diaphragm forces air through extremely narrow space.
(Examples: Federal 53, 55, and some types of locomotive horn)
Motor-Driven:
Motor Bell - Rotating motor drives bell striker. Vibrating only.
(Examples: Amseco MBA, Wheelock MB, System Sensor SSM)
Motor Horn (Klaxon) - Rotating motor drives toothed cogwheel against metal diaphragm.
(Examples: Amseco BZ-54VT, submarine diving horns)
Motor Siren - Rapidly spinning blade forces air through small side ports.
(Examples: Federal Signal Models A and B9, Master Blaster, civil defense sirens)
Interesting. I suspect many old smoke alarm horns, like the Kobishi CLB-27 are of the “high hat” type. Looking into the horn aperture, you can see that it’s a circular metal plate held with a pin in the center, like a cymbal.
@@willbill808 Neat! I never really gave much thought to the miniature ones. Also, apparently the hi-hat type is also called a "disc horn" in the automotive industry.
This is the only video about this on TH-cam
Thank you so much for the video it makes sense now
Nice technical explanation!