You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.

Reply to thread

Message

Pin 3 of IC5 is a bad idea. This pin exposes the chip's internal voltage reference. It's only there so you can connect a bypass capacitor to it. Drawing current from that pin only reduces the stability of the chip's regulated outputs. Pin 1 is the actual high(er) current output pin to use for the clarifier. Pin 9 of the 8719 is fed from this pin of the 3756, and works just fine to power the clarifier control.

The mystery only deepens.

73

[QUOTE="nomadradio, post: 849480, member: 22"] Pin 3 of IC5 is a bad idea. This pin exposes the chip's internal voltage reference. It's only there so you can connect a bypass capacitor to it. Drawing current from that pin only reduces the stability of the chip's regulated outputs. Pin 1 is the actual high(er) current output pin to use for the clarifier. Pin 9 of the 8719 is fed from this pin of the 3756, and works just fine to power the clarifier control. The mystery only deepens. 73 [/QUOTE]

Top Bottom