Stepped Output Peak To Peak AC Voltage Source
Many moons ago; I started to work in a St. Louis trade school repairing test equipment.
After starting the job I found out there was no voltage / calibration source for the oscilliscopes.
In one of my more lucid moments I thought, lets
Use close tolerance (1 % , or measure) and connect all resistors in series, with the 820 ohm resistor at the end.
6.3vac rms = 17.819 V. p-p, so 17 ea 1000 ohm resistors plus an 820 ohm resistor will be really close, (99.99%).
Each 1K will develop 1 volt and the 820 ohm resistor handles the rest.
You can add an on/off switch or just plug it in when you need it.
I set the circuit up for 1 thru 10 plus 15 volt taps, but you can set it up however you wish.
Dr. Cheap aka: KF9F