SCR self power supply gate triggering board

The utility model provides a SCR self-powered gate pole trigger board, which comprises a high potential energy-fetching unit, a low potential energy-fetching unit, an integrated voltage-stabilizing unit, a SCR driving unit, SCR over voltage protection units, a SCR ultra-temperature and undervoltage alarming unit. The high potential energy-fetching unit and the low potential energy-fetching unit are respectively connected with the integrated voltage-stabilizing unit, the integrated voltage-stabilizing unit is respectively connected with the SCR over voltage protection units, SCR ultra-temperature and undervoltage alarming unit, the SCR ultra-temperature and undervoltage alarming unit is respectively connected with the SCR over voltage protection units. The primary function of the utility model is characterized by receiving triggering light impulse signals, fulfilling the trigger of a gate circuit transistor of the high potential, and having the functions of SCR over voltage protection, trigger board under-voltage protection and gate circuit transistor overtemperature fault alarm loopback low order circuit.