Electronic indicator type rotation speed and work hour meter for engine

The utility model discloses an electronic indicator type rotation speed and work hour meter for engines, and one end of a first coil of a transformer in the meter is connected with the mid-point of a generator on the engine. The other end of the first coil is connected with a rectifying regulation circuit, and a resistor is connected with a capacitance in a signal detection circuit in parallel to connect with a character wheel type timer in series between one end of a secondary coil of the transformer and the output end of the rectifying regulation circuit, and the input end A of a frequency/deformation circuit IC 1 is connected with a connection point between a resistor R 1 and a transformer B. The electronic indicator type rotation speed and work hour meter for engines has an engine running time accumulating function, a small heating value and a low power consumption, and works reliably and stably.