=== DC Power Supply === * '''Bipolar 24 Volt power supply''' . 24V power supplier / [[attachment:LCGT/subgroup/Electronics/DC_power_supply.pdf|selection report]] * '''Connector and cable''' . Cables for DC24V [[attachment:LCGT/subgroup/Electronics/DC_power_plan.pdf|selection report]] * '''[[attachment:LCGT/subgroup/Electronics/low_noise_regulator.pdf|+15V regulator (ultra low noise)]]''' * '''High voltages''' . QPD vias voltage (In TAMA case, 180V) . Coil driver (LIGO High-Voltage type: >140V) . PZT driver (DC >100V or AC power supply)