Discussion Overview
The discussion revolves around the feasibility and sourcing of thermoelectric generators for powering a 4.5 volt accelerometer. Participants explore various aspects including the technical requirements, alternative power sources, and the practicality of using thermoelectric generators in different environments.
Discussion Character
- Exploratory
- Technical explanation
- Debate/contested
Main Points Raised
- One participant seeks suggestions for purchasing a thermoelectric generator to power an accelerometer, expressing limited knowledge of electrical circuits.
- Another participant provides a link to a supplier and discusses the significant temperature differential required for effective operation of thermoelectric generators, noting the high cost for low power output.
- A question is raised about the necessity of using a thermoelectric generator instead of a simple DC power supply.
- One participant suggests wiring multiple units in parallel to increase voltage or using thermoelectric generators to recharge batteries instead of powering the device directly.
- Another participant clarifies that wiring units in parallel does not increase output voltage and proposes considering solar panels as an alternative.
- Discussion includes the variability of "realistic" temperature gradients depending on the application, with examples such as internal combustion engines where significant temperature differentials are achievable.
- A participant notes the general rarity of thermoelectric generators in practical use due to their expense and inconvenience, mentioning specific applications like gas boilers and space probes.
- Information is shared about energy harvesting power supplies from Linear Technology, which includes thermoelectric sources among others.
- It is suggested that any thermoelectric cooler could potentially be used as a generator, possibly at a lower cost for smaller temperature differentials.
- A concern is raised regarding the efficiency of thermoelectric coolers compared to traditional compressors.
Areas of Agreement / Disagreement
Participants express a range of opinions on the practicality and efficiency of thermoelectric generators, with no consensus reached on their suitability for the intended application. Multiple competing views on alternative power sources and the feasibility of using thermoelectric generators remain evident.
Contextual Notes
Participants highlight limitations such as the need for significant temperature differentials, the high cost of thermoelectric generators, and the varying definitions of what constitutes a "realistic" environment for their use.