El817 Circuit Diagram. 2 channel type pc837. Photocoupler rohs compliant el817 datasheet el817 circuit el817 data sheet.
Everlight eletcronics co ltd technical data sheet. As far as this clock is concerned the circuit is able to light up the six in 18 tubes without problems but i have noticed the q10 component an irf740 mosfet tends to overheat which doesn t happen in other nixie driving circuits i ve used see e g. The isolation voltage tester with zero cross circuit shall be used.
What you need to test photocoupler optocoupler pc817 optocoupler resistors 1k.
The circuit is totally simple but the resistance will give it protection at the input in high voltages. It is packaged in a 4 pin dip package. Resistors 470 ω led 3v wires. As far as this clock is concerned the circuit is able to light up the six in 18 tubes without problems but i have noticed the q10 component an irf740 mosfet tends to overheat which doesn t happen in other nixie driving circuits i ve used see e g.
