Abstract: For the requirements of triggering numerous gas switches in linear transformer drivers (LTD) synchronously, a multi-output synchronous triggering technology named LTD-trigger is proposed based on the reversed-LTD configuration and inductive transformer principle. It operates like numbers of pulse transformer in series. With one primary fast high-voltage pulsed power supply, multichannel fast triggering pulses can be obtained through the inductive coupling of a pulse transformer at secondary, corresponding to gas switches in LTDs. It effectively reduces the delay and jitter time due to the intrinsic advantages of the coaxial configuration compared with the conventional triggering method. With careful design, LTD-trigger can meet the requirement for switches in LTDs. This paper analyzed the working principle of LTD-trigger by establishing a circuit model and simulation. With analysis of some fault modes and preliminary experiments, the feasibity of LTD-trigger is confirmed.