Logic PD Inc., an Eden Prairie-based manufacturer of electronic components for digital devices ranging from stethoscopes to basketballs, has been bought by a St. Louis-based private equity firm. The Star Tribune reports on the deal for Logic PD by Compass Group Equity Partners. Terms weren't disclosed. Logic PD CEO Bruce DeWitt and other executives will continue to lead the business, which will combine with another Compass portfolio company to form Compass Electronics. Logic PD employs 325 people...