OREAD Versions

On the new board r06 the polarity of the operating voltages is determined by wire bridges P1/P2 OR N1/N2, but the external connection to the power supply remains as before.
! ALWAYS SET ONLY EITHER THE P1+P2 OR N1+N2 BRIDGES !
! DO NOT SET THE P AND N WIRE BRIDGES AT THE SAME TIME BECAUSE THIS WILL CAUSE A SHORT CIRCUIT OF THE SUPPLY VOLTAGES !

The polarity of electrolytic capacitors is also marked by a dot in the assembly print.

It is done in this way to avoid the operating voltage having to be connected the other way round than the board print indicates depending on the selected circuit (NPN/PNP)

PNP circuit:
set wire bridges: P1, P2
Transistors T1, T2, T5, T7 = PNP
Transistors T3, T4, T6 = NPN
Capacitor connection: dot = negative


NPN circuit:
set wire bridges: N1, N2
Transistors T1, T2, T5, T7 = NPN
Transistors T3, T4, T6 = PNP
Capacitor connection: dot = positive

There is also now a separate place and print for the resistor RB.

For ground scheme and single supply circuit look at OREAD_r04 files