This circuit, found in a 1994 documentation, uses 20 A 2N5448 triacs or equivalent and should be mounted on good heatsinks. Great care must be taken with the isolation of the control potentiometer. Diacs are of type DB3 / DB202 for 27 V or equivalent. Capacitors must be at least 250 V isolated if the grid is 110 V and 400 V if the grid is 220 V.
| Clique na imagem para ampliar |
