Greetings. The author's name is Maragret Galles. California is where we've been living for years. Supervising is what she does in her day job but she's always wanted her own business. One of the things she loves most is home brewing but she hasn't made a dime with it. He's not godd at design but you might want to check his website: https://Circuitfunctions.com/npo-high-voltage-ceramic-chip-capacitors/My site: circuit functions capacitor solutions