Warning light control circuit capable of preventing start-up flashing

A warning light control circuit capable of preventing start-up flashing, comprising:

• a signal processor having stored a data of a plurality of flash modes therein, said signal processor using the numbers of said flash modes to simultaneously set an identification (ID) number of each of a plurality of warning lights, and set a predetermined said identification (ID) number of said warning lights as a starter and the rest of said identification (ID) numbers as receivers;
• a control circuit comprising at least a control signal source, said control signal source being coupled to an active switch (Q1, Q3 or Q5), the output end of said active switch (Q1, Q3 or Q5) coupled to a control input side of said signal processor through a control bus;
• and
• a warning light control integrated circuit (IC) coupled to said warning lights and coupled with said signal processor to a data bus through a data output side, a start-up flash prevention circuit provided between said warning light control integrated circuit (IC) and said data bus, said start-up flash prevention circuit comprising an active switch (Q6), a current limiter (D6), a first shunt resistor (R18) and a second shunt resistor (R19), a gate (G) of said active switch (Q6) coupled between said first shunt resistor (R18) and said second shunt resistor (R19), the opposite end of said first shunt resistor (R18) coupled to an input voltage source (Vin), the opposite end of said second shunt resistor (R19) coupled to a ground point, and a source(S) of said active switch (Q6) also coupled to the ground point, a drain (D) of said active switch (Q6) coupled to the positive terminal (+) of said current limiter (D6), said current limiter (D6) having the negative terminal (−) coupled to said data bus;
• and
• wherein when the warning light control circuit starts to turn on, the starting pulse wave of said data bus is blocked by said current limiter (D6) to prevent said warning light control integrated circuit (IC) from being turned on instantaneously.