WX-10 Pinout
| Supply Voltage | ±15V | |
| Power Consumption | ≈9W | |
| Deflection Input Swing | 15Vpp (Differential) | |
| Internal Deflection Amp Bandwidth | >200kHz | |
| Unblank Logic Input | >5V |
| \ | FWD | PWR | \ | RG1 | RG2 |
| OFF | NC | NC | 25 | GND | GND |
| ON | NC | BATT | 50 | NC | GND |
| FWD | GND | BATT | 100 | GND | NC |
| 200 | NC | NC |
The high voltage deflection amplifier turns out to be a classic Class-AB design. Some techniques (e.g. the degenerated differential connection) are used to enhance linearity. I don't think in its design there are any advanced techniques like bootstraping.
This system is open-loop in nature. I saw markings on the sensitive transistors (especially the differential pair), indicating that those transistors are hand-picked to improve matching and accuracy. The overall gain should be 13~17x
WX-10 HV Amplifier Photograph
WX-10 HV Amplifier Reverse-Engineered Schematic