*SDA Driver (Last update Feb. 18, 2000) [#m795a5a9]
#ref(SDAdriverManual.JPG,left,around,wrap,30%)
#ref(SDAdriverequiv.JPG,left,around,wrap,38%)
The circuit shown here is a one-box driver for scratch drive actuator. The printed-circuit-boad is mounted on top of a power supply, which has been removed from a PC. Voltages of +5v and +/-11v are used for operation. Either 5v or 11v is dc-dc converted by EMCO Q01-5 up to 100v or 220v, respectively. This voltage is switched by using bipolar transistors of large Vceo (=600v). A relaxation oscillator of an op-amp is built on the board to generate a switching signal to the transistors (see related pages: Penny Driver, 2D scanner driver).

#clear

*Operation manual: [#gfad27ec]
+Turn on the main power switch (1). Main power indicator (LED) will be on. 
+Choose output voltage (100v or 220v) by switch (2). 
+Choose frequency (30Hz, 60 Hz, or 300 Hz) by switch (3). 
+Turn on output switch (4). 
+To stop using, turn off switches (4), (2), and (1).

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