一种高精度延时线
By designing high-precision delay lines and utilizing a filter and shaping circuit composed of capacitors and resistors, combined with delay lines U1 and U2, high-synchronization-precision delay adjustment was achieved, solving the problem of balancing cost and accuracy, and improving the anti-interference capability and service life of the delay circuit.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- MIANYANG HAITIAN NEW MEASUREMENT & CONTROL TECH CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-07-17
AI Technical Summary
Existing delay circuits struggle to balance cost and accuracy; high-precision circuits are expensive, while low-precision circuits are not accurate enough.
A high-precision delay line was designed. By using a filter and shaping circuit composed of capacitors and resistors, combined with delay lines U1 and U2, the delay of the pulse signal can be adjusted. Different delay values can be output by controlling the delay line with a switch.
It achieves high synchronization accuracy delay adjustment, has a wide delay range, strong anti-interference ability, simplifies circuit design, extends service life, and reduces costs.
Smart Images
Figure CN224521033U_ABST
Abstract
Claims
1. A high precision delay line, characterized by, This includes delay lines U1 and U2; the Y pin of delay line U1 is connected to one end of resistor R2 and one end of resistor R3 via capacitor C2; the other end of R2 is connected to one end of resistor R1 and one end of capacitor C1; the other end of resistor R1 is connected to one end of capacitor C3 and ground; the other end of capacitor C3 is connected to the other end of resistor R3; the other end of capacitor C1 is the input terminal of the high-precision delay line. Pins D1, D2, D3, D4, and D5 of delay line U1 are connected to pins D1, D2, D3, D4, and D5 of delay line U2, respectively; pins D1, D2, D3, D4, and D5 of delay line U1 are connected to pins 10, 9, 8, 7, and 6 of terminal S1, respectively; pins 5, 4, 3, 2, and 1 of terminal S1 are all grounded. The O1, O2, O3, O4 and O5 pins of delay line U1 are connected to the Y1, Y2, Y3, Y4 and Y5 pins of delay line U2, respectively. The GND pins of delay line U1 and delay line U2 are both grounded; the VCC pins of delay line U1 and delay line U2 are both connected to an external power supply; the O pin of delay line U2 is connected to one end of capacitor C4, and the other end of capacitor C4 is the output terminal of the high-precision delay line. A switch is provided between pins 1 and 10 of terminal S1, between pins 2 and 9, between pins 3 and 8, between pins 4 and 7, and between pins 5 and 6.
2. The high precision delay line of claim 1, wherein, The external power supply includes transformer chip U4. The VIN pin of transformer chip U4 is connected to grounding capacitor C7, grounding capacitor C8, the EN pin of transformer chip U4, and 5V voltage, respectively. The SS pin of transformer chip U4 is connected to grounding capacitor C9. The EP pin of transformer chip U4 is grounded. The GND pin of transformer chip U4 is grounded. The FB pin of transformer chip U4 is connected to one end of resistor R8, one end of resistor R10, and one end of resistor R11, respectively. The other end of resistor R8 is connected to the grounding resistor. The VOUT pin of transformer chip U4 is connected to the other end of resistor R10, one end of capacitor C10, grounding capacitors C11, C12, C13, C14, C15, C16, and C17, respectively, and serves as the output terminal of the external power supply. The other end of resistor R11 is connected to the other end of capacitor C10.