delphijustin
Banned
This here allows you to convert a telephone signal into a Standard Speaker Audio signal. By using a Transformer and a On/Off Switch and a Resistor
Here's what you need.
1 Transformer (for best quality use a 600Ω transformer)
1 1KΩ Resistor
1 4 to 4µF capacitor ( it may work with other ceramic capacitors )
A telephone cord
and something to cut-and-slice the phone cord.
Here's optional stuff you may want.
an Audio connector like( 3.5mm, RCA Jack, etc )
Here is the blueprint. If the transformer has 3 wires on oneside then wire the 2 middle phone wires up to the 1st and 3rd wire on that side and not using the middle wire.
**broken link removed**
What's neat is you can use it in reverse to transmit audio out trew the phone line. You can use any transformer you want so it can even be the cheapest transformer you buy.
Here's what you need.
1 Transformer (for best quality use a 600Ω transformer)
1 1KΩ Resistor
1 4 to 4µF capacitor ( it may work with other ceramic capacitors )
A telephone cord
and something to cut-and-slice the phone cord.
Here's optional stuff you may want.
an Audio connector like( 3.5mm, RCA Jack, etc )
Here is the blueprint. If the transformer has 3 wires on oneside then wire the 2 middle phone wires up to the 1st and 3rd wire on that side and not using the middle wire.
**broken link removed**
What's neat is you can use it in reverse to transmit audio out trew the phone line. You can use any transformer you want so it can even be the cheapest transformer you buy.
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