hola gente, bueno veo que siguen muy complicados con el encoder, acá les paso las características de uno similar al que use:
Electrical Characteristics
Output .........................2-bit gray code
Closed Circuit Resistance ......3 ohms maximums
Contact Rating .................1 mA @ 5 VDC
Insulation Resistance ..........10 megohms @ 250 VDC
Dielectric Withstanding Voltage
Sea Level ......................50 VAC minimum
Electrical Travel ..............Continuous
Contact Bounce (15 RPM).........5.0 ms. maximum
RPM (Operating) ................100 maximum
Environmental Characteristics
Operating Temperature Range .....-30 °C to +70 °C (-22 °F to +158 °F)
Storage Temperature Range .......-40 °C to +85 °C (-40 °F to +185 °F)
Humidity.........................MIL-STD-202, Method 103B, Condition B
Vibration .......................30 G
Contact Bounce ..................10~55~10 Hz / 1 min. / Amplitude 1.5 mm
Shock ...........................100 G
Rotational Life..................30,000 cycles minimum
Switch Life .....................20,000 cycles minimum
IP Rating........................IP 40
Mechanical Characteristics
Mechanical Angle ................360 ° continuous
Running Torque ..................30.6 to 204 g-cm (0.42 to 2.83 oz.-in.)
Shaft Side Load (Static) ........2.04 kgf (4.5 lbs.) minimum
Weight ..........................3 gm (0.1 oz.) maximum
Terminals .......................Printed circuit board terminals
Terminals .......................Printed circuit board terminals
Soldering Condition
Wave Soldering...................Sn95.5/Ag2.8/Cu0.7 solder with no-clean flux: 260 °C max. for 3-5 seconds
Hand Soldering...................Not recommended
Hardware.........................Konb
Switch Characteristics
Switch Type .....................Contact Push ON Momentary SPST
Power Rating (Resistive Load) ...10 mA at 5 V DC
Switch Travel....................0.5 +0.4/-0.3 mm
Switch Actuation Force ..........360 +153/-102 gf (5 +2.1/-1.4 oz.-in.)
además del encoder tiene swich que se acciona presionando el vástago (Switch: single pole; push-on)
espero haber aclarado el asunto
saludos
Osvaldo
PD mas datos en
http://www.switchchannel.com/switches/encoder%20switches/re11/mechanical%20rotary%20encoder%20switch.htmpara comprar en argentina
http://articulo.mercadolibre.com.ar/MLA-55631674-rotary-encoder-switch-_JM