In message , Stephen H Alsop writes >Some of the replies to the phase control problem >I posted on the piclist referred to a manual called: > >SCR Manual including Triac and other Thyristors >by General Electric. > >I have not been able to locate this manual here in the >UK as it appears to be out of print. > >Does anyone know of a source for this book? > You should be able to get it from the British Library. They have most technical books there that have ever been published, or can obtain them from other libraries. Leon -- Leon Heller: leon@lfheller.demon.co.uk http://www.lfheller.demon.co.uk Amateur Radio Callsign G1HSM Tel: +44 (0) 118 947 1424 See http://www.lfheller.demon.co.uk/rcm.htm for details of a low-cost reconfigurable computing module using the XC6216 FPGA