You're likely referring to a thermoelectric generator in the context of gas logs. It's a common misconception that gas logs have thermogenerators, as they are typically not included.

Here's a breakdown of what a thermogenerator is and why it's usually not found in gas log setups:

What is a Thermogenerator?

A thermogenerator is a device that converts heat energy into electricity. It works by using the Seebeck effect, where a temperature difference across a material causes a voltage difference. In simpler terms, it creates electricity from heat.

Why Thermogenerators are Not Common with Gas Logs:

* Low Efficiency: The amount of electricity generated from the heat of gas logs would be very minimal. It's not a practical way to power anything significant.

* Cost: Thermogenerators can be expensive to manufacture and integrate into a system. The potential power output doesn't justify the cost in most cases.

* Limited Applications: The power generated would only be useful for very small electronic devices, like a small fan or a few LEDs.

What you may be referring to:

* Pilot Light: Gas logs typically have a pilot light that uses a small flame to ignite the main gas flow. This pilot light requires a constant source of gas, which could be considered a small "energy source" but not a thermogenerator.

* Remote Controls: Some gas log models may offer remote control functionality, using batteries or a small power adapter for operation. This is not directly related to a thermogenerator.

In summary:

Gas logs do not typically have thermogenerators. They rely on gas combustion for heat and do not generate a significant amount of electricity. If you're interested in using heat for electricity generation, you would need to consider alternative methods like solar panels or a dedicated thermogenerator system.