[sdiy] another Jupiter 6 question

[Gordon JC Pearce]

On Mon, 21 Nov 2011 22:44:55 -0500
Eric Frampton <eric at ericframpton.com> wrote:


> TR2 (2SC2021, assuming I'm calling the pins correctly):
> E = 0.011V, making the connection changes to 0.010V
> B = shows same change as E
> C = 0.626V, making the switch drops it to ~0.55V and the voltage keeps dropping over time from there as long as I hold the button down.

The base should be pulled considerably positive through R21.  Pressing the button should clamp that to ground.  0.011V is not enough to turn on TR2.

Is TR2 faulty?

-- 
Gordon JC Pearce MM0YEQ <gordonjcp at gjcp.net>