The revolutionary articles of the electrothermal thermostat incubator circuit control system have been published many years ago. This has a very important guiding role in the improvement of the electrothermal incubator. This article is very useful for instructing inspection personnel or equipment maintenance personnel to make small changes to old-fashioned equipment, and it is worth promoting.
However, the original circuit can be further simplified. The simplified circuit eliminates the need for high-cost and difficult-to-buy power transformers. Because the constant-temperature incubator maintains a long-term power state, the power transformer is more demanding, and energy-saving types are usually used. Transformer or use two ordinary power transformers in series, can also save an electrolytic capacitor, so that the cost is lower, work more reliable.
In addition, there are several errors in the electric constant temperature incubator circuit, (1) the polarity of the rectifier bridge is drawn incorrectly; (2) the electrolytic capacitor is not marked with polarity; (3) the triac symbol is drawn incorrectly. It is necessary to correct it here.
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