But to make that measurement you need an amplifier circuit designed for the thermocouple being used. Linear Technology LTC 1049 Low Power Zero-Drift Operational Amplifier with Internal Capacitors ...

Learn how to build a high-powered amplifier with this easy-to-follow DIY guide. From the components to the assembly, watch as each step unfolds, making it simple to create an audio powerhouse.

Make a portable audio simple amplifier. Homemade amplifier for speakers ...