Reference electronics designs for %E5%85%A8%E5%BF%97A133%E6%A0%B8%E5%BF%83%E6%9D%BF%E6%A8%A1%E5%9D%97%EF%BC%88%E9%82%AE%E7%A5%A8%E5%AD%94%EF%BC%89