01. SYSTEM OVERVIEW: The RLC Trainer Board is an electrical circuit and network trainer from SB-TEK combining DC circuit, AC single-phase/three-phase, and RLC network experiments on a single benchtop panel. A fused 3-phase input unit, a regulated DC power supply, a digital frequency counter, and a signal generator sit alongside fixed inductor, capacitor, and resistor banks — letting students’ source, generate, measure, and load a circuit entirely from the one board. A dedicated RLC Series Circuit load unit, wired with its own rated resistor, inductor, and capacitor loads (all rated for 380V AC), supports AC single-phase and three-phase load experiments, while the general-purpose inductor, capacitor, and resistor banks — spanning µH to mH, pF/nF to µF, and low-to-high ? ranges — support frequency-response, filter, and general RLC network analysis.
02. CORE HARDWARE SPECIFICATIONS
Parameter Specification
3-Phase Input Unit R, Y, B, N terminals, each individually fused
DC Power Supply Regulated dual-rail output: +5V, +Vr (adjustable), Gnd, -Vr (adjustable), -5V
Frequency Counter Digital LCD readout with Input and Gnd terminals
Signal Generator Unit Sine / Triangle / Square waveform selector; adjustable Range, Frequency, and Amplitude controls; Gnd reference
AC Load Circuit Rating RLC series-circuit load components rated for 380V AC
03. COMPONENT & MODULE OVERVIEW
Category Components / Values
Inductor Bank • 1mH, 10mH, 20mH, 30mH, 40mH
• 10µH, 20µH, 30µH, 40µH, 100µH
Capacitor Bank • 10µF, 25µF, 50µF, 100µF, 1000µF, 2200µF
• 100nF, 10nF, 0.1nF, 1nF
Resistor Bank 4?, 8?, 16?, 16?, 33?, 33?, 250?, 500?, 1000?, 2000? (all 2W)
AC 1-Phase & 3-Phase Load Unit — RLC Series Circuit • Circuit terminals: R, C, L, N wired as a series RLC reference circuit
• Resistor loads: 800?/80W, 1200?/80W, 2000?/80W (380V AC rated)
• Inductor loads: 3× 1H/30W (380V AC rated)
• Capacitor loads: 1.5µF/22.7VAR, 2.5µF/125VAR, 3.5µF/176VAR (380V AC rated)
3-Phase Input Unit R, Y, B, N terminals, individually fused
04. KEY FEATURES
• Dedicated RLC series-circuit load unit with fixed R/L/C values rated for 380V AC single- and three-phase experiments
• On-board fixed inductor, capacitor, and resistor banks spanning µH–mH, pF/nF–µF, and ? ranges for frequency-response and filter experiments
• Built-in signal generator with Sine/Triangle/Square waveform selection and adjustable range, frequency, and amplitude
• Digital frequency counter with LCD readout for direct signal measurement
• Regulated dual-rail DC power supply (±5V / adjustable ±Vr) for powering external circuits
• Fused 3-phase input unit (R/Y/B/N) for safe three-phase network experiments
05. TYPICAL EXPERIMENT AREAS
The on-board module set naturally supports the following experiment categories:
• Series and parallel RLC circuit analysis using the fixed R/L/C banks
• Resonance and frequency-response experiments using the signal generator and frequency counter
• AC single-phase and three-phase load experiments using the RLC series-circuit load unit
• Three-phase network experiments using the fused R/Y/B/N input unit
• DC circuit experiments using the on-board regulated power supply
• Waveform generation and analysis (sine/triangle/square) with adjustable frequency and amplitude
