Most proprietary ER fluids can be used and virtually any force range can be developed. This is a relatively low force, aluminium bodied, battery operated damper for use on off-road bicycles, specifically downhill and cross county racing. The basic performance requirements are detailed below. The power supply is driven from two 9 V batteries in series via a simple controller that varies the input to the high voltage power supply. The relationship is sensibly linear with 12 volts in giving 3,000 volts out.
Operation is by the cyclist turning a handlebar mounted potentiometer.
This is a high force, steel bodied, off-road construction vehicle damper suitable for suspension seating. The basic performance requirements are detailed below. Input voltage can vary between 9 and 35 volts and protection against reverse polarity is built-in. The high voltage stage operates as a high voltage amplifier with a gain of 1000. Input signal are 0 to 2.5 volts, output is 0 to 2.5 kV. The output power rating is 20 watts.