LA 7837-LA 7838 vertical deflection

1.vcc1[9v]
2.trigger in
3.time constant
4.amplitude control
5.50hz/60hz switch
6.ramp generator
7.ac/dc feedback
8.vcc2[24v]
9.pump-up out
10.osc.stop
11.gnd
12.v.out
13.pwr supply v.out