1.Outline This is a small power unit on a test bench. This is very convenient and comfortable instead of battery. This accelerates the test. 2.Functions Input AC 100V Output (1) 5V 1A : use for digital circuits (2) +-15V 0.2A : use for analog circuits operation amp etc. (3) +-3 to 18V : use universally instead of battery 0.2A (4) charger of NiCd battery : MAX 8 batteries serially connected (SUM-3 or SUM-2 type battery) ----- 8V +------ +------- | TR |----|Diode |----| Reg | 5V 1A ----- +------ +------- ----- 18V +------ +------- | TR |----|Diode |-+--| Regx2 | +-15V 0.2A ----- 18V +------ | +------- | +------- +--| Regx2 | +-3 to | | SW | +-18V 0.2A | +------- | +------- +--| Cont | NiCd BAT +------- 3.Circuit Schema and PCB ArtWork The Circuit and ArtWork are edited with CAD HiWIRE II, then download and braws by HiWIRE II. Circuit and Artwork(Brows by HiWIRE)