Cool to have all those alarms including the ones over the intercoms those alarms brings back so many memories please do more all over the building miss these kind of experience in school
It's full-wave rectified power (FWR). Here's a description of what's going on in the power supply to cause this: - The transformer drops the voltage from 120 volts AC to 24 volts AC. - The rectifier, which uses diodes, allows current to only flow in one direction - essentially chopping the 60 Hz AC sine wave in half. - Now you have current that's essentially DC but pulsing on and off at a rate of 60 Hz. This is why the horn wavers and produces that low undertone. Some appliances, like Simplex electronic horns, are incompatible with this current type. - To "smooth the bumps" and provide steady, 24 VDC current, most power supplies feature a filtering capacitor that stores charge, which is discharged during the gaps. Horns running on this type of power supply will operate normally.
I graduated high school in 1998. I never attended this school. It was my first time in this school. I was just video recording it. My buddy works for the fire dept alarm division and was in charge of conducting the fire drill
I remember these fire drill videos they are taped in the spring of 2010.
Cool to have all those alarms including the ones over the intercoms those alarms brings back so many memories please do more all over the building miss these kind of experience in school
Wheelock 7000 series of horns!
Those are wheelock 7002 horn strobes
That panel belongs in a museum!
7001Ts. They still do the strobe skipping like the 7002s
They’re wheelock 7002-24s
Did the system get replaced?
Someone's doing woodwork in the woodshop.
Finally found this video again after I forgot the channel name and I saw it again
Sounds like my school does, same sound
those panels look fake?
That must have been loud on continuous
those fire doors should closed
are there other alarms because I think I can hear some
Why are you so shaky?
What camera did you use in the video?
I see this video was uploaded in April 2020. Did you guys actually have school to do these drills then or were they done before the pandemic??
lcoster 1203 this was recorded in 2010
You don't get to go around and inspect the alarms?
Also was there a King Fisher panel? Sush a rare panel, and a other panel which is the main panel
The king fisher panel is connected directly to the fire department so if the alarms go off it’ll go right to them
@@firealarm421 what About the other panel
@@STR2K6 the other panel next to the king fisher is the main panel that’s hooked up to the notification appliances and pull stations
@@firealarm421 what’s the name
Guessing it’s a fire lite panel
Were the alarms this raspy when you attended this school in 1998?
It's full-wave rectified power (FWR). Here's a description of what's going on in the power supply to cause this:
- The transformer drops the voltage from 120 volts AC to 24 volts AC.
- The rectifier, which uses diodes, allows current to only flow in one direction - essentially chopping the 60 Hz AC sine wave in half.
- Now you have current that's essentially DC but pulsing on and off at a rate of 60 Hz. This is why the horn wavers and produces that low undertone. Some appliances, like Simplex electronic horns, are incompatible with this current type.
- To "smooth the bumps" and provide steady, 24 VDC current, most power supplies feature a filtering capacitor that stores charge, which is discharged during the gaps. Horns running on this type of power supply will operate normally.
I graduated high school in 1998. I never attended this school. It was my first time in this school. I was just video recording it. My buddy works for the fire dept alarm division and was in charge of conducting the fire drill
That’s an awesome fire panel! Too bad it puts out FWR.
Why are fire drills are very important
ToLet People Practice to Get Prepared for a Real Fire so That's Why Schools Have Fire Dirlls
Bruh bruh bruh
Why was some of the footage shaky?
Nice
Bunch of wasps