31. These studies indicate that transcranial direct current stimulation is safe in a single session. 32. These galvanic exercises employed a monophasic wave form, direct current . 33. 1960s two-way radio remote control consoles used direct current loops. 34. Diodes are used in semiconductors to convert electricity from alternating current to direct current . 35. The direct current produced is an effect of the homopolar nature of the design. 36. The method of supply was direct current ( DC ). 37. Inverters change the direct current into alternating current for connection to the electrical grid. 38. We spoke of alternating current and direct current and who was better at that. 39. Direct current with a negatively charged electrode ( DCEN ) allows for high penetration.40. Third rail systems are always supplied from direct current electricity.
