Figure 1, Wiring Diagram of a Typical Vibrator Supply. The diagram is of a device that will deliver DC voltage of 110 to 170 volts from a 12 volt DC source. The positive 12 volt line goes through C1 to ground. C1 is a 0.22 u f non electrolytic capacitor. The 12 volt line also goes through a 10 u H 3 amp choke to the top end of C2. The other end of C2 goes to ground. This is also a 0.22 u f non electrolytic capacitor. The junction of C2 and the choke goes to the center tap of the primary winding of the transformer which has a dual line voltage primary, 120 and 240 volts. The two windings are connected in series to make a center tapped winding. The secondary is 24 volt C T. The primary and secondary have been interchanged. That is the dual 120 240 volt windings are being used as the secondary and the 24 volt C T winding is being used as the primary. The vibrator is shown inside a circle. There is an inductor, coil of wire, connected to pins 3 and 4. Pins 1 and 2 each connect to stationary contacts. There is a movable contact shown between the two stationary contacts but it is not touching either one. The stationary contact is connected to pin 3. Lines coming out from the circle indicate that pin 4, one end of the coil, is connected to the center tap of the transformer primary. Pin 3, other side of coil and movable contact, connects to ground. Pin 1, one of the stationary contacts, connects to the top of the transformer primary. Pin 2, other stationary contact connects to the bottom of the transformer primary. The movable contact is a light reed that has a mechanical resonant frequency of about 100 Hz. The coil is tuned to the same frequency by an external capacitor which is not shown. On the secondary side of the transformer, what used to be the primary, the center tap is grounded. There is a capacitor, C 3, connected across the entire secondary. No value is given for this capacitor. The top goes to one plate of a rectifier tube, zero Z 4. The bottom end of the secondary goes to the other plate of the rectifier tube. This tube has no heater. The common cathode of the tube goes to the positive side of C4, a 47 u f 450 volt electrolytic. The negative end is grounded. The junction of the tube's cathode and C4 goes to one end of a filter choke, 5 H 125 mA. The other end of the filter choke goes to the positive end of C5, another 47 u f 450 volt electrolytic capacitor. The negative end of C5 is grounded. The junction of the choke and C5 goes to a point labeled B plus. This completes the verbal description.