Modeling Information
Analog control, also known as DC (Direct Current) control, is the traditional and simplest method for operating model trains
Here's how it works:
Power Pack/Throttle A DC power pack or throttle converts household AC power into variable DC voltage, typically up to 12 volts.
Voltage Control A control knob on the power pack or throttle adjusts the voltage supplied to the track. Increasing the voltage increases the speed of the train, while decreasing the voltage slows it down.
Direction Control A direction switch reverses the polarity of the DC voltage, which in turn reverses the direction of the locomotive.
Track and Locomotive The track is connected to the DC output of the power pack. The locomotive's motor receives power through its metal wheels and gears, allowing it to move along the track.
Key Characteristics and Considerations
Simplicity. Analog control systems are generally straightforward to set up and use, making them a popular choice for beginners or smaller layouts.
Cost-Effective Analog controllers and equipment tend to be more affordable than their digital counterparts.
Limited Independent Control In a basic analog system, only one train can be controlled per electrical circuit. To operate multiple trains independently, you'll need:
Block Wiring Dividing the track into isolated sections ("blocks") and using switches to control the power to each block.
Multiple Controllers Using separate power packs or controllers for different track sections.
PWM (Pulse Width Modulation) Some analog throttles utilize PWM to control the average voltage on the track, potentially improving slow-speed operation.
Advantages
- Simple and easy to set up.
- Affordable compared to digital systems.
- Suitable for beginners and small layouts.
- No limitations on layout size if proper wiring and block systems are implemented.
Disadvantages
- Managing multiple trains can become complex without extensive wiring and block systems.
- All trains on the same un-blocked section of track will move at the same speed and in the same direction.
- Limited functionality for advanced features like realistic sounds, lighting, and accessory control compared to DCC.
In summary, analog control offers a basic, reliable, and cost-effective way to get started in model railroading. While it may lack the advanced features and flexibility of digital systems like DCC, it remains a viable option for many hobbyists, particularly those with simpler layouts or those who appreciate its traditional feel.
The WWSL
The WWSL is my eighth or ninth layout since my first train set in 1965. I controlled my previous layouts with analog control devices.
Transformer I still have it! Its a Model Rectifier Corporation 12V DC transformer.
Walk Around Controller I still have it! Its a Model Rectifier Corporation Cab Control 77. (I think it was the first 'hand held' throttle advertised). You separated the connection between the transformer and the layout. Wire the in posts to the transformer, wire the layout connection to the out posts with a long long cord and I had the ability to walk around and follow the train.
Block occupancy
Present Day The WWSL ver.3.0 uses a digital command control system.
I still use my analog control system. I use it to test the locomotive motors and gear train and then put the locomotives into a break-in process! See Break In Track for additional information.
References
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