SBG-PID

[aft_72005]

Q3 is the series pass negative regulator. In the sim it looks like it is shorted between the collector of Q3 and sw1. The emiter and collector of Q3 are reversed also. Probably other errors

but with this configuration .. out pout drop to 4.7V+...4.7V-

[Altra]

see this transistor VT9 is not series .

VT 9 is in series. The negative 12v goes through D1 and then VT 9 to v-. The feedback to the base of VT 9 controls the voltage to v- . Judging by the 4.7 v zener, the output should be about -10v and split supply +/-5v.

[aft_72005]

[ATTACH]57258[/ATTACH]

also your power section drew ........simulation is OK .

[aft_72005]

but simulation is ok .. out put is +6V and -6V !!!!

[aft_72005]

Q3 is the series pass negative regulator. In the sim it looks like it is shorted between the collector of Q3 and sw1. The emiter and collector of Q3 are reversed also. Probably other errors

see this transistor VT9 is not series .

[aft_72005]

Everything between C1 and R20,R23... doesn't make any sense.

Yes, I drew the power section according to Sascho's SBG circuit diagram .

[Altra]

Q3 is the series pass negative regulator. In the sim it looks like it is shorted between the collector of Q3 and sw1. The emiter and collector of Q3 are reversed also. Probably other errors

[Carl-NC]

Everything between C1 and R20,R23... doesn't make any sense.

[aft_72005]

Hi
power supply simulation .

[GeoMax]

Hi Sascho,

I agree with Aft_72005. Interesting simple circuit. I'm wondering how does the discrimination part of the circuit actually works? Or maybe someone else here explain it?

[aft_72005]

Pulse induction motion detector.Ground balance and meter discrimination.Discrimination is possible best for PI detector with one coil.[ATTACH]46021[/ATTACH]

Hi Sascho ..

after long time .. I visit this post … seem as interesting and I will study circuit ..for it thanks

[aft_72005]

[ATTACH]56269[/ATTACH]
And a sascho1.

who drew this schematic ?

[aft_72005]

No, I didn't draw. gold scan 4 is better than sbg

Did you make Gold Scan 4?

[aft_72005]

https://drive.google.com/file/d/19I9...w?usp=drivesdk
A video of sascho2

The video is not available... please resend

[aft_72005]

[ATTACH]56270[/ATTACH]

Who draw this PCB ?