Bob Beck brain tuner update
three frequency 0.5hz/7.8hz/9.5hz ，111hz and 1Khz for modulation, two pulse widths of 55% and 22% are available for selection.
Brain tuner circuit电路图
原件列表 数量 名称 # 花费 备注 1 project box 400-1542 3.70 RS: 270-231 2.32 1 9v rechargeable battery 573-15F8K 7.99 1 9v battery clip 12BC160 .54 1 output transformer 42TM006 2.41 1 C555 timer IC 511-TS555CN .46 1 C556 timer IC 511-TS556CN .62 1 8 pin IC socket 571-26404633 .11 1 14 pin IC socket […]