The invention relates to an airborne aero model electrothermal engine intelligent ignition device, which is composed of a DC / DC switch power supply module and the
peripheral circuits thereof. By the improvement of the electric indexes of the switch power supply module such as the output
voltage and the output current, the
peripheral circuits adopt simple atypical connection method. (1) monitor and
work status indicating circuits: a
branch circuit composed of an ab
jumper wire and a
capacitance C1 between the input terminals (1, 2) of the switch power supply module; a
branch circuit composed of an LED D4, a switch AN and a load R0 between the output terminals (2, 3); a
branch circuit composed of an LED D3 and a
silicon diode D2 and connected with the output terminal (3); and a branch circuit composed of a
Schottky diode D1. (2) a resistance R2 and a
potentiometer W which are in parallel connected to two ends of a resistance R3 form an output
voltage regulating circuit. The invention has the advantages that: the running states of the ignition device and a
glow plug are logically displayed, so the
glow plug always at best work state, the persistent problem that the engine oil way and the circuits are implicated mutually is completely solved, lightweight is realized, and the ignition start of the engine is more convenient and reliable.