I accidentally found one of the schemes amplifier 12v 90w class A where the scheme is produced by saturn, one of the most famous pcb providers

Data size at internet access speed: 1 byte = 8 bits 1 kilobyte = 1,024 bytes 1 mega byte = 1,024 kilobytes 1 gigabyte = 1,024 megabytes 1 terabyte = 1,024 gigabytes Great speed internet access 128 Kbps = 128/8 = 16 KBps 256 Kbps = 256/8 = 32 KBps 384 Kbps = 384/8 = 48 KBps 512 Kbps = 512/8 = 64 KBps 1 Mbps = 1024/8 = 128 KBps 2 Mbps = 2048/8 = 256 KBps The formula for speed internet access: Speed ​​= number of files: time Number of files = speed x time Time = number of files: speed