GregS[_3_]
August 24th 09, 02:23 PM
In article >, Rick T > wrote:
>Greetings All
>
>I have a pt1100 amp with an impedance of 8 ohms rated at about (1000
>watts output power) and a toroidal electromagnet with the resistance
>of about 1 ohm. I'm doing an experiment with AC signals, audio and
>toroidal coils. I'm trying to see how much I can increase the
>magnetism inside the toroidal coil basically a donut electromagnet
>using AC signals.
>
>The steps I use:
>I play a signal out my computer than it's amplified by the pt1100 amp
>which is connected to the wire wound around a donut shape. Like this
>http://www.codecogs.com/users/13108/img_em5.jpg
>
>The problem I'm having is after I play the signal with about an 1 amp
>running through the wire the internal circuit breaker in the pt1100
>amp gets tripped. Is there a way I can get all the amps to flow
>through the wire without tripping the internal circuit breaker of the
>pt1100 amp?
>
>Please not that the goal is to get as much current to flow though the
>wires of the toroidal coil as possible to create an electromagnet
>without tripping the internal circuit breaker of the amp. At the
>moment I can't increase the windings. I tried putting a ceramic
>100ohm 10 watt resistor in series with the coil to see if that would
>help but the change was barley noticeable .
>
>I also tried making a glass water resistor but it looks like most of
>the current was dropped in the water doing electrolysis.
>
>And also I can't use DC at this point.
>
>PS: I'm using 18 gauge wire.
>
>Tia sal22
You need to use a variac.
>Greetings All
>
>I have a pt1100 amp with an impedance of 8 ohms rated at about (1000
>watts output power) and a toroidal electromagnet with the resistance
>of about 1 ohm. I'm doing an experiment with AC signals, audio and
>toroidal coils. I'm trying to see how much I can increase the
>magnetism inside the toroidal coil basically a donut electromagnet
>using AC signals.
>
>The steps I use:
>I play a signal out my computer than it's amplified by the pt1100 amp
>which is connected to the wire wound around a donut shape. Like this
>http://www.codecogs.com/users/13108/img_em5.jpg
>
>The problem I'm having is after I play the signal with about an 1 amp
>running through the wire the internal circuit breaker in the pt1100
>amp gets tripped. Is there a way I can get all the amps to flow
>through the wire without tripping the internal circuit breaker of the
>pt1100 amp?
>
>Please not that the goal is to get as much current to flow though the
>wires of the toroidal coil as possible to create an electromagnet
>without tripping the internal circuit breaker of the amp. At the
>moment I can't increase the windings. I tried putting a ceramic
>100ohm 10 watt resistor in series with the coil to see if that would
>help but the change was barley noticeable .
>
>I also tried making a glass water resistor but it looks like most of
>the current was dropped in the water doing electrolysis.
>
>And also I can't use DC at this point.
>
>PS: I'm using 18 gauge wire.
>
>Tia sal22
You need to use a variac.