Casablanca
- Jan 1, 2010
- 5
- Joined
- Jan 1, 2010
- Messages
- 5
Hello,
This is my first post on this forum and I look forward to participating in the future.
I am trying to teach myself the basics of electronics. I have bought the textbook and lab manual that is used at my local community college for the first course in EE Technology.
I have run into a road block in the lab manual. It tells me to buy on-line a 1 watt power amp kit that has a voltage gain of 1. (Later in the instructions, I am supposed to connect a speaker to the output of the amp and supply the amp with a 1KHz sinewave. )
I have found on the Internet 2 audio amp kits that have a power gain of 1 watt, but both of the amps have a voltage gain of at about 30db.
First, does anyone know where I can find a kit that is described in my manual? If not, can you direct me to a schematic for such a circuit?
Second, I am confused. If the amp only has a voltage gain of 1, is the current being amplified, at the max, to 1 amp. so that the formula P = VI results in a power gain of 1 watt?
When are voltage gain audio amps used and when are current gain audio amps use? Does it make any difference?
Thanks for your help.
This is my first post on this forum and I look forward to participating in the future.
I am trying to teach myself the basics of electronics. I have bought the textbook and lab manual that is used at my local community college for the first course in EE Technology.
I have run into a road block in the lab manual. It tells me to buy on-line a 1 watt power amp kit that has a voltage gain of 1. (Later in the instructions, I am supposed to connect a speaker to the output of the amp and supply the amp with a 1KHz sinewave. )
I have found on the Internet 2 audio amp kits that have a power gain of 1 watt, but both of the amps have a voltage gain of at about 30db.
First, does anyone know where I can find a kit that is described in my manual? If not, can you direct me to a schematic for such a circuit?
Second, I am confused. If the amp only has a voltage gain of 1, is the current being amplified, at the max, to 1 amp. so that the formula P = VI results in a power gain of 1 watt?
When are voltage gain audio amps used and when are current gain audio amps use? Does it make any difference?
Thanks for your help.