Bleeder current  = 0.1 × (total load current)   [10% rule]
Bottom resistor  = |V_lowest - V_negative_rail| / I_bleeder
Each resistor    = ΔV / I_through_that_section
Power rating     = I² × R

Negative-rail support:
  • Enter negative load voltages (e.g. −25 V).
  • The chain extends from +Vs, through all positive taps,
    through GND (0 V), through negative taps, down to the
    negative supply rail (−Vs).
  • Supply voltage Vs is the POSITIVE terminal voltage;
    the negative rail is assumed to be −Vs (symmetric supply).
  • If you have no negative-rail loads, the negative supply
    terminal is treated as GND and the chain ends at 0 V.