I need hifi audio isolation circuit, using without audio isolation transformer for my tv set to connect hifi system.
with out this circuit may i shock with high voltage to touch metal body of hifi system or ground line, speaker terminals or input jacks. A good quality audio transformer is not chip or not small in size. any body can give me an idea to make this circuit?
Pick any value you like such as 100n and put a resistor or a pot across the input (after the caps) to adjust the audio level. Use 200v or higher for each cap.
I need hifi audio isolation circuit, using without audio isolation transformer for my tv set to connect hifi system.
with out this circuit may i shock with high voltage to touch metal body of hifi system or ground line, speaker terminals or input jacks. A good quality audio transformer is not chip or not small in size. any body can give me an idea to make this circuit?
Is ok, but with respect of earth it always 220 voltage ac but not direct, its voltage drop some kilo Ohms loads. i am sure it is not leakage voltage. My tv set circuit supply voltage is not isolate then mains
It does not matter if your TV is "live" or not.
If you put the resistors on the input to your amplifier and earth the amplifier, you will not see any voltage on the input of the amplifier.
Yes!! thanks of lots, my problem is solve. i put a connection my signal ground and earthing and also surprise my sound quality is far far better then previous,
Pick any value you like such as 100n and put a resistor or a pot across the input (after the caps) to adjust the audio level. Use 200v or higher for each cap.
Colin: i want to use this with my computer sound card and amplifier to protect and isolate my sound card, could you please draw the connection for me.... what i understand is like attached image (for each line).