FAQ | TDK

Q: Please provide precautions for when conducting insulation / withstand voltage tests.

Q.Please provide precautions for when conducting insulation / withstand voltage tests. Power Supplies > Switching Power Supply > AC-DC Power Supplies/ DC-DC Converters A. Insulation / withstand voltage tests can cause deterioration and require special attention. In input systems&#44 output systems&#44 and FG (frame grounding)&#44 it is necessary to execute them with the same potentials in the systems (short in the same systems). A preferable test device is one that starts up gently when the test is ON and automatically discharges charged energy when it is OFF. Please use resistance of 100kW to 1MW when discharging energy manually after a test (please avoid discharging with low impedance as it may cause deterioration). Sufficient safety measures for preventing electric shock are also necessary in any of these cases. Related Information Power Supplies Product Information Power Supplies Tech Notes Contact Information Inquiries on products&#44 sales and technical matters

Q: Can power modules / on-board power supplies be operated just by connecting input-output terminals to power supplies and load devices?

Q.Can power modules / on-board power supplies be operated just by connecting input-output terminals to power supplies and load devices? Power Supplies > Switching Power Supply > AC-DC Power Supplies/ DC-DC Converters A. There are power supplies that cannot be operated just by connecting input-output terminals to power supplies and load devices. Please be sure to note the following precautions. - Products with sensing functions require the sensing terminals to be connected with the output sides. - Products with remote ON/OFF control functions sometimes require connections with the -Vin terminals or +Vin terminals. - Some products require peripheral components such as capacitors or choke coils. Refer to the instruction manuals and basic connections of the respective products for details. Related Information Power Supplies Product Information Power Supplies Tech Notes Contact Information Inquiries on products&#44 sales and technical matters

Q: Please explain the precautions for the remote controlling of the ON/OFF statuses of the /R option.

Q.Please explain the precautions for the remote controlling of the ON/OFF statuses of the /R option. Power Supplies > Switching Power Supply > AC-DC Power Supplies A. The ON/OFF statuses cannot be controlled through contract controlling with the/R option. (Turning the system ON/OFF with a switch or relay) External voltage must therefore be supplied if contract controlling has been used up to now. Please check what method has been used for controls when making a replacement. Related Information AC-DC Power Supplies Product Information Power Supplies Tech Notes Contact Information Inquiries on products&#44 sales and technical matters

Q: I noticed that storage conditions in the instruction manual differ from the storage conditions in the specifications. What is the reason for this difference?

Q.I noticed that storage conditions in the instruction manual differ from the storage conditions in the specifications. What is the reason for this difference? Power Supplies > Switching Power Supply > AC-DC Power Supplies/ DC-DC Converters A. ●Storage temperature and humidity listed in the instruction manualThe temperature and humidity are shown as an approximate guide for storage in a customer warehouse before installing the power supply in the equipment. ●Storage humidity and temperature listed in the specificationsThe specifications show the temperature and humidity at which storage is possible when the power supply is built into the equipment and it is not operating. Related Information Power Supplies Product Information Power Supplies Tech Notes Contact Information Inquiries on products&#44 sales and technical matters